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Andrew Williams

A few years ago it was estimated that only 44% of web traffic came from genuine visitors.  The rest was from bots, hacking tools, scrapers and spammers.  With that volume or dodgy web traffic coming to your website, are you confident that your website can withstand a hacker attack?  What if I told you that an estimated 37,000 websites are hacked EVERY DAY.  How confident are you now?

Securi, a top internet security service, reported that they dealt with 500 website infections a day, 7 days a week.  Out of 11,000 infected sites they dealt with, 78% were Wordpress sites.  

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A few years ago it was estimated that only 44% of web traffic came from genuine visitors.  The rest was from bots, hacking tools, scrapers and spammers.  With that volume or dodgy web traffic coming to your website, are you confident that your website can withstand a hacker attack?  What if I told you that an estimated 37,000 websites are hacked EVERY DAY.  How confident are you now?

Securi, a top internet security service, reported that they dealt with 500 website infections a day, 7 days a week.  Out of 11,000 infected sites they dealt with, 78% were Wordpress sites.  

Once a site is hacked, it can be used for all kinds of malicious purposes, such as directing your traffic, stealing customer details, deleting files, changing your login details to lock you out, sending spam emails to millions of people (which will label your domain as spam and remove any chance it has of ranking in Google), you get the idea?

And hackers don't just target large, popular sites.  They'll use computer software to scan millions of websites for vulnerabilities, and then attack the soft targets.  There is no softer target than a newly setup Wordpress website.

There is obviously good reason to be concerned about your website security.  However, I don't want you to think that Wordpress is an insecure platform that should be avoided, it isn't.  Wordpress is actually very secure and if a security hole is found, it is usually plugged very quickly by the Wordpress security team and pushed out to all Wordpress installs - automatically.  The real security issues come from the people running the websites.  They often don't have enough knowledge to make educated decisions about the content they put on their site, the plugins they use or the themes they install.

This course has two aims:  

  1. I want to give you the knowledge you need so that you can understand where the main threats come from.  With that knowledge, you will understand how your administrative actions can affect the security of your website.  This knowledge gives you the power to stop hackers. 

  2. I want to give you a step-by-step solution to make your website as hackerproof as possible.  We'll install a single Wordpress plugin and go through the entire setup process.  Simply watch the tutorials, and follow along on your own site as I secure one of my own.

If you are not very technically minded, don't worry.  This course assumes no technical ability and no programming skills.  

About the Course

The course starts off with an introduction to hacking.  Why hackers hack, and what makes some Wordpress sites more vulnerable to hackers than others.

We'll then go through the main ways that you can harden up your Wordpress installation, and I'll show you how to manually set some of these up on your site.  You can try out some or all of these techniques yourself if you want to, but it is not essential (see lower down). You may just want to sit back and absorb the information so that you have the knowledge you need to make informed decisions on your Wordpress website going forward.

In the second half of the course, we'll install a Wordpress Security Plugin that covers all of the major security weaknesses outlined in the first half of the course, and work our way step-by-step, configuring the plugin to make our site virtually hack-proof.  

By the end of this course, you will have both the knowledge and the skill set to secure a Wordpress website against hackers. 

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What's inside

Learning objectives

  • Know why hackers hack, and some of the common ways they do this
  • Understand the main threats that cause security problems with wordpress websites
  • Understand that wordpress is actually a secure platform, but it can easily be made insecure by the actions of those that run and administer the site
  • Secure a wordpress website from hackers using a variety or common sense and technical tweaks to the site
  • "copy" the security measures that have been set up on one site, and "import" them into other wordpress websites they own, meaning security can be set up on subsequent sites in seconds
  • Find out more information about those trying to hack their site

Syllabus

This section introduces the course and instructor to the students. We'll also take a brief look at Wordpress and the hackers that are trying to break your website.
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This lecture introduces the Wordpress Security course and your instructor. There are a couple of ways you can use this course, and this lecture will cover those.

This lecture looks at whether or not Wordpress is a secure platform. Can you trust Wordpress with your website?

Why do hackers hack? There are a lot of reasons, none of them good. This lecture looks at a few of the reasons, but also reassures you that your website will be very secure after following this course.

There are a lot of common hacks on Wordpress sites. This lecture introduces a few and also points you to an authority web page if you want more details.

Everyone should backup their Wordpress website. This lecture explains what you need to backup, and offers suggestions for tools that will allow you to do that.

There are a number of security plugins for Wordpress. We will install and setup a good one later in this course, but for now, let me just introduce a few of the more popular plugins.

Passwords need to be strong and random. Weak passwords are one of the main ways hackers gain access to a website. You'd be surprised how many people use the word "password" as their password.

Usernames are another weak area for many Wordpress users. Pick a username that cannot be guessed.

Know the URL that you use for signing into your website. A simple hacker trick could get your username and password without you realising you've been tricked.

PHP error reporting can give hackers some sensitive information. You can easily disable this though.

The file editor built into the Dashboard is one of the first ports of calls if a hacker gains access to your site. It's therefore a good idea to disable it.

You need to be careful about code embedded into Wordpress posts or pages. If you don't trust the code 100%, leave it out.

Wordpress security is only as strong as it's weakest link, and users may be that weak link. This lecture looks at correctly assigning roles to users, to give them just enough security clearance to perform their job.

Plugins can be another source of security holes. This lecture looks at some common sense measure to ensure your website is secure.

Themes can also provide backdoors to hackers, so make sure you use themes from reputable sources, and that those themes are regularly maintained and updated.

A good measure to take is to stop someone repeatedly trying to log into your site on the login page. If a user fails to login a couple of times, they are probably not authorised to access the site, so block them.

You may already be familiar with 2-Factor authentication. Your Google account may use this, or your online banking. You can add this layer of security to your Wordpress site if you wish.

The login page is the gateway to your Wordpress Dashboard, so protect it!

A simple security measure you can take is to change the default Wordpress table prefix. This is typically done when you install Wordpress, but you can change it at a later date as well.

Wordpress security keys are an extra layer of protection for your site. If you install Wordpress using a one-click installer, you don't need to do anything as these will be created for you at the time of the installation.

XML-RPC is a programming interface that developers can use to "talk" to Wordpress. It's also a potential security threat.

A good web host can help increase the security of your website.

This is an important configuration file that contains sensitive information about your site. You may want to protect it.

The files and folders on your server are given permissions, which basically control who can read and write to those files and folders. There are specific permissions required within your Wordpress installation.

Find and install the plugin in the Wordpress repository.

Before you begin, we need to backup important Wordpress files. If anything goes wrong with the configuration of the plugin, you can always use these to restore access to your Dashboard and site.

As you secure your site, you should keep taking backups of important files as mentioned above. However, it is possible you will get locked out. This tutorial shows you what to do if that happens.

If you want to just play it safe, you can only enable the security features that are safe to implement and not cause your site problems. If you are more adventurous, you can try activating all measures. This lecture explains how to identify the safe from the "adventurous".

Optional exercise.

The Dashboard gives you a birds eye view of your security setup on the site. Check out how secure your website is.

The settings screen gives you quick access to a couple of useful tools. We've already used two of the tools to backup files, but let's see what else is here.

This video looks at the User Security settings.

This video shows how to set up 2-factor authentication on your site.

Remember we talked about the table prefix and how Wordpress liked to use a default of wp_ ?? This lecture shows you how you can change your prefix if you need to, or just want to. Don't forget to backup the database first (instructions included in this video).

Files and folders need the correct permissions set, to keep them secure. This lecture shows you how to make sure everything is correct, and also how to disable the PHP editor if you didn't do that earlier in the course.

Setup a firewall on your Wordpress website, to add an extra layer of security.

The plugin has some great tools to help prevent brute force attacks. This lecture shows you how to set these up.

This section of the plugin helps to deal with spam comments by adding a math captcha to the comment form. It's not the greatest spam eliminator, but it is quick to implement and will help a little. A more useful feature is the auto-blocking of repeat spam commenters.

One way of detecting whether your site has been hacked is to monitor the Wordpress files on your server and compare them to the original Wordpress files from Wordpress.org. This is a built in feature of the plugin.

This video shows the options in the Tools section.

I have created a Checklist for you to follow as you secure your Wordpress websites. I've made it available as a PDF file which you can download as the resource for this lecture.

What is your Security Strength after completing the security settings?

This video shows where to find more information about the premium version of this plugin.

If you are new to Udemy, please watch this lecture that shows you around the Udemy interface, and how to get the most out of your Udemy experience as you take this, and other, courses.

A final lecture with some information and resources you may find useful.

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Career center

Learners who complete Wordpress Security - How To Stop Hackers will develop knowledge and skills that may be useful to these careers:
Website Administrator
The Website Administrator is crucial for maintaining the operational integrity and security of web properties. This role involves managing website content, monitoring performance, and, critically, safeguarding against threats. This WordPress Security course provides the essential knowledge and skills needed to excel as a Website Administrator. You will learn to understand hacker motivations, identify common vulnerabilities specific to WordPress, and implement robust security measures. The practical, step-by-step approach to configuring security plugins and hardening your WordPress installation ensures you can make informed administrative decisions, securing your site effectively and proactively against potential attacks.
Freelance Web Security Consultant
As a Freelance Web Security Consultant, you advise clients on best practices for securing their websites and implement protective measures. With WordPress being incredibly popular, the ability to secure these sites is a high-demand skill. This WordPress Security course is exceptionally well-suited for a Freelance Web Security Consultant. It provides both the foundational knowledge to understand threats and the practical, step-by-step skills to implement comprehensive security solutions using a plugin. You will learn to make websites hackerproof, identify vulnerabilities, and provide specialized consulting services to clients, building trust and a strong portfolio.
Managed Hosting Specialist
A Managed Hosting Specialist works for hosting providers, often managing and supporting numerous client websites, many of which are built on WordPress. Ensuring the security of these hosted sites is a primary responsibility. This WordPress Security course is an excellent fit for a Managed Hosting Specialist, providing direct, actionable knowledge. It covers everything from understanding hacker tactics to implementing specific security plugin configurations and hardening techniques, such as file permissions and brute force protection. This comprehensive training enables you to proactively protect client sites, resolve security incidents efficiently, and offer expert advice on WordPress security.
WordPress Developer
As a WordPress Developer, you build, customize, and maintain websites using the WordPress platform. Ensuring the security of your creations is paramount, as vulnerabilities can arise from plugins, themes, or custom code. This course is ideal for a WordPress Developer, equipping you with a deep understanding of WordPress security principles. It teaches how administrative actions impact site security, how to identify and prevent common hacks, and provides a step-by-step solution for implementing security best practices using a plugin. This foundation makes you adept at developing secure WordPress solutions and protecting client sites.
Web Security Analyst
A Web Security Analyst specializes in identifying, analyzing, and mitigating security threats targeting web applications and infrastructure. Given that WordPress powers a vast portion of the internet, expertise in securing this platform is highly valuable. This WordPress Security course provides a focused and practical foundation for an aspiring Web Security Analyst. You will gain insight into hacker methodologies, understand common WordPress vulnerabilities, and learn concrete steps to harden web installations. The course's emphasis on both knowledge and hands-on plugin configuration directly supports developing the skill set needed to assess and enhance web security, making your sites hackerproof.
Cybersecurity Specialist
A Cybersecurity Specialist protects computer systems and networks from threats, which inherently includes web applications. While the field is broad, understanding specific platforms like WordPress, which is frequently targeted, is invaluable. This WordPress Security course can significantly help a Cybersecurity Specialist seeking to deepen their expertise in web application security. It provides crucial knowledge on why hackers attack WordPress sites, common vulnerabilities, and practical, step-by-step methods to secure them. This specialized focus on a prevalent web platform contributes to a well-rounded cybersecurity skill set, enabling the professional to address a major attack surface.
Vulnerability Management Specialist
A Vulnerability Management Specialist systematically identifies, assesses, and remediates security weaknesses within an organization's systems. Given the widespread use of WordPress, understanding its specific vulnerabilities is a key aspect of this role. This WordPress Security course is exceptionally well-suited for a Vulnerability Management Specialist. It teaches precisely where the main threats come from regarding WordPress and how to implement a step-by-step solution to make websites hackerproof. This specialized knowledge enables you to effectively prioritize and address WordPress-related vulnerabilities, enhancing the overall security posture.
IT Support Professional
An IT Support Professional assists users with technical issues, which often includes problems related to websites or online services. When a WordPress site encounters a security breach or unusual behavior, knowledge of WordPress security becomes critical for diagnosis and resolution. This WordPress Security course is highly relevant for an IT Support Professional. It explains the common ways hackers exploit WordPress sites and provides practical solutions for protecting them. By understanding the main threats and step-by-step security configurations, you will be better equipped to troubleshoot security-related incidents and guide users on maintaining secure websites.
Technical Support Engineer
A Technical Support Engineer provides in-depth technical assistance for products or platforms, frequently including web hosting environments and content management systems like WordPress. When clients face security challenges or need guidance on hardening their websites, this expertise is vital. This WordPress Security course offers a clear advantage for a Technical Support Engineer. It outlines specific WordPress vulnerabilities and provides actionable, step-by-step methods to implement security measures, including plugin configuration. This detailed understanding enables you to effectively diagnose, resolve, and prevent security issues for WordPress users, enhancing client satisfaction and website integrity.
Backend Web Developer
A Backend Web Developer builds the server-side logic, databases, and APIs that power web applications. If working with WordPress, or building custom applications that interact with it, understanding its security model is critical for creating resilient systems. This WordPress Security course is highly relevant for a Backend Web Developer. It provides detailed insight into WordPress's core security features and vulnerabilities, from database prefixes to file permissions and XML RPC. The course empowers you to make informed architectural and coding decisions, ensuring the backend components you develop or interact with are secure against common exploitation methods.
Digital Marketing Manager
A Digital Marketing Manager oversees online marketing strategies, often relying heavily on the company's website. A hacked website can devastate marketing campaigns, SEO rankings, and brand reputation. Therefore, understanding website security is a defensive, yet crucial, skill. This WordPress Security course helps a Digital Marketing Manager understand the critical importance of website integrity. While not a hands-on security professional, grasping the main threats and how administrative actions affect security, as taught in this course, empowers you to make informed decisions and ensure your marketing efforts are not undermined by security failures.
Application Security Engineer
An Application Security Engineer focuses on integrating security practices throughout the software development lifecycle for applications. WordPress, as a major web application platform, requires dedicated security considerations. This WordPress Security course is helpful for an Application Security Engineer looking to specialize in common web application platforms. It provides practical knowledge on WordPress-specific vulnerabilities, such as insecure plugins and themes, and teaches how to implement robust security measures. This understanding can inform security reviews, threat modeling for WordPress deployments, and guide the development of secure configuration guidelines.
Systems Administrator
A Systems Administrator manages the infrastructure that hosts applications, including web servers running WordPress sites. While focusing on the broader system, understanding application-level security, especially for a widely used platform, may be useful. This WordPress Security course may be helpful for a Systems Administrator. It provides insight into the specific vulnerabilities of WordPress and teaches practical methods for hardening installations. This knowledge allows for better overall system hardening decisions, ensuring the underlying infrastructure is robustly protected against threats that might originate from common web application exploits.
Information Security Auditor
An Information Security Auditor assesses an organization's security posture, identifying weaknesses and ensuring compliance. While this role typically requires a broader understanding and often an advanced degree, specific knowledge of common platforms is beneficial. This WordPress Security course may be useful for an Information Security Auditor. It provides practical insight into how WordPress sites are secured and the common vulnerabilities they face. Understanding these practical aspects allows an auditor to more effectively evaluate the security controls in place for web applications and recommend targeted improvements.
Security Operations Center Analyst
A Security Operations Center Analyst monitors, detects, and responds to cybersecurity incidents. Understanding the context of alerts generated by web applications, especially a prevalent one like WordPress, may be helpful. This WordPress Security course may be helpful for a Security Operations Center Analyst. It introduces why hackers target WordPress, common attack vectors, and how sites are secured. This foundational knowledge can aid in recognizing suspicious activities, differentiating legitimate traffic from malicious attempts, and understanding the context of alerts related to WordPress websites, thereby improving incident response capabilities.

Reading list

We've selected 50 books that we think will supplement your learning. Use these to develop background knowledge, enrich your coursework, and gain a deeper understanding of the topics covered in Wordpress Security - How To Stop Hackers.
Provides a comprehensive overview of cybersecurity, covering the threats, risks, and challenges facing governments and businesses. It is written by two former Secretaries of Homeland Security and provides insights from their experience in leading the nation's cybersecurity efforts.
Delves into contemporary data protection challenges and solutions, including advanced backup and recovery techniques. It covers topics like cloud backup, data deduplication, and continuous data protection. Written by a recognized expert, this book is excellent for deepening understanding of modern backup strategies and technologies. It valuable resource for professionals seeking up-to-date information.
Provides a practical guide to cybersecurity for businesses. It covers a wide range of topics, including risk assessment, threat intelligence, and incident response. It is written by a cybersecurity expert with over 15 years of experience.
Focuses on the security aspects of firewall configuration, covering topics such as firewall design, firewall deployment, and firewall monitoring. It good choice for experienced practitioners who want to learn about the latest security threats and how to mitigate them.
Provides a platform-agnostic understanding of the principles and features of effective enterprise backups. It emphasizes establishing corporate procedures and policies for comprehensive data protection rather than focusing on specific products. This is an excellent resource for gaining a broad understanding of the strategic aspects of data backup within an organization. It is highly recommended for IT decision-makers and can serve as a key reference.
Specifically addresses identity management in modern application development, covering key protocols like OAuth 2.0 and OpenID Connect, which are central to implementing 2FA in many systems. It's highly relevant for understanding contemporary approaches to authentication and identity, making it a valuable resource for developers and architects.
Delves into the internal workings of the Linux operating system, offering a deeper understanding of concepts like the filesystem and how permissions are implemented at a system level. While not solely focused on file permissions, it provides crucial context for understanding why they are important and how they function. It's an excellent resource for those looking to move beyond basic command usage.
Focusing on enterprise-level backup and recovery strategies, this book delves into implementing robust data protection architectures. It covers various backup applications and discusses modern concepts like single-instance storage and tapeless backup environments. is suitable for those looking to deepen their understanding of enterprise backup challenges and solutions. It serves as a valuable reference for IT professionals.
Comprehensive guide to disaster recovery planning and implementation, with significant coverage of data backup strategies for various environments. It offers practical blueprints for building resilient systems and addresses the recovery of data on networks and end-user devices. It's a valuable resource for deepening understanding of disaster recovery, which is intrinsically linked to data backup. It useful reference tool for IT managers and consultants.
Building on OAuth 2.0, OpenID Connect is an identity layer frequently used with 2FA. provides an in-depth look at implementing OpenID Connect, making it highly relevant for understanding modern authentication standards that support multi-factor authentication. It's a practical resource for developers and security professionals.
Similar to the CompTIA Linux+ guide, this book focuses on the objectives for the LPIC-1 certification, which include detailed sections on file permissions and ownership. It's an excellent resource for structured learning and exam preparation, ensuring a thorough understanding of permissions for entry-level Linux professionals.
This study guide for the CompTIA Linux+ certification exam includes comprehensive coverage of file permissions as a key exam topic. It structured resource for those preparing for certification and provides a solid understanding of the practical application of permissions in a professional context. It is suitable for individuals pursuing IT certifications.
Provides a broad and deep understanding of the fundamental principles of cryptography and network security, which are essential prerequisites for understanding two-factor authentication. It is widely used as a textbook in academic institutions and by industry professionals. While not solely focused on 2FA, it lays the necessary groundwork.
This practical guide to WordPress plugins covers a wide range of topics, including plugin selection, installation, configuration, and troubleshooting. It is an excellent resource for anyone who wants to use WordPress plugins to extend the functionality of their website.
Provides a comprehensive introduction to the Linux command line, which is essential for understanding and managing file permissions. It covers fundamental concepts like file navigation, manipulation, and the basic structure of the Linux filesystem. This book is highly valuable for beginners and serves as a solid foundation before diving deeper into the intricacies of file permissions.
Focuses on practical measures for protecting systems and networks from Brute Force attacks. Written by Robert Graham, a security researcher and author, the book provides a step-by-step guide to implementing effective countermeasures and strengthening security postures.
Covers the broader topics of incident response and disaster recovery, with data backup being a fundamental element. It provides a theoretical and practical framework for responding to incidents and recovering from disasters. This book is suitable for those looking to understand the strategic and procedural aspects surrounding data backup in a larger security and resilience context. It can be used as a textbook or reference.
Delves into the principles and practices of access control and identity management within the context of information security. It's a suitable text for those looking to deepen their understanding of how user management fits into a larger security framework. This book is often used as a textbook in cybersecurity and information systems programs.
Details potential issues in backup and recovery and links them to various backup methods and business continuity tactics. It covers the impact of data loss and the cost of downtime, helping to build a case for appropriate backup budgets. While published some time ago, its focus on real-world scenarios and practical considerations makes it valuable for understanding the foundational challenges of data protection. It useful reference, particularly for understanding the business impact of data loss.
Is designed for database administrators working with SQL Server, covering the types of backups available and how to restore them. It includes newer features like backing up to Azure Storage. This book is essential for SQL Server professionals and provides practical guidance on backup and recovery within that specific database environment. It's a valuable reference for SQL Server DBAs.
While covering broader disaster recovery planning, this book includes essential information on data backup as a critical component. It provides practical tools and instructions for assessing risk and developing a disaster recovery plan. This good resource for understanding the larger context in which data backup operates and is particularly relevant for professionals involved in business continuity. It can be used as a reference for planning purposes.
A step-by-step guide to building WordPress plugins for beginners. covers everything from creating a simple plugin to developing more complex plugins with custom functionality.
Provides a collection of recipes for configuring firewalls to protect against common security threats. It good choice for experienced practitioners who want to learn how to configure firewalls to meet the specific needs of their organizations.
A comprehensive guide to all aspects of Linux, the Linux Bible includes significant coverage of file permissions as part of its system administration sections. It is suitable for a wide range of users, from beginners to advanced, and serves as a valuable reference for various Linux distributions. The book's breadth makes it useful for understanding file permissions within the larger Linux ecosystem.
Is written from the perspective of a hacker, providing insights into the techniques and strategies used to launch Brute Force attacks against passwords. Written by Kevin Mitnick, a renowned cybersecurity expert and convicted hacker, the book offers a unique perspective on the inner workings of these attacks.
Provides a practical approach to brute force attacks. It provides step-by-step instructions on how to prevent and detect brute force attacks, and how to recover from a brute force attack. It is written by two security professionals with extensive experience in preventing and detecting brute force attacks.
While covering broader web security, this book includes essential chapters on authentication and authorization vulnerabilities in web applications. Understanding these concepts is vital for secure user management in online systems. provides a solid foundation in web security with relevant sections on user-related vulnerabilities.
Covers Linux administration with a focus on storage, and file permissions are an integral part of managing filesystems and storage devices. It provides practical knowledge for administrators dealing with storage configuration and access control.
Builds upon the foundational concepts in 'Applied Cryptography' and focuses on the engineering aspects of building secure cryptographic systems. Understanding these principles is important for those designing and evaluating authentication protocols that utilize cryptography, including those for 2FA.
Is considered a classic in network security, delving into the intricacies of securing communication in a public environment. It covers fundamental concepts of authentication and network protocols that are foundational to understanding how 2FA operates within network communications. It's a valuable reference for gaining a solid understanding of the underlying principles.
Provides a beginner-friendly introduction to Linux administration, covering essential topics like user and group management and file permissions. It's a good starting point for those new to Linux system administration and provides clear explanations of fundamental concepts.
Focused on web development security, this book covers best practices for handling identity and data. It would include discussions on secure authentication methods relevant to 2FA implementation in web applications. It's a practical guide for developers looking to secure their web projects.
Offers an end-to-end approach to implementing IAM solutions, covering business drivers, requirements, design, and deployment. It's a good resource for professionals involved in the practical aspects of rolling out IAM systems. This book provides a structured methodology for IAM projects.
This practical cookbook offers a recipe-based approach to securing Linux systems, including specific examples and techniques for configuring and managing file permissions for enhanced security. It's a useful resource for system administrators and security professionals seeking hands-on guidance.
Covers designing and implementing a comprehensive security architecture, including a significant focus on identity and access management as a core component. It's relevant for professionals looking at user management from an enterprise-wide strategic perspective. This book is useful for understanding how user management fits into overall organizational security.
While broader than just data backup, this book addresses disaster recovery within the context of critical infrastructure, which heavily relies on robust data protection. It covers risk assessment, emergency response, and maintaining command and control. is relevant for understanding the high-stakes environment of data backup and recovery in critical systems. It valuable reference for professionals in critical infrastructure sectors.
This guide focuses specifically on cloud data backup and the standard requirements associated with it. It provides questions and frameworks for assessing cloud backup challenges and generating solutions. This niche but relevant book for those focusing on cloud backup, offering a structured approach to understanding requirements in this contemporary area. It is more of a guide or framework than a traditional textbook.
Provides a practical description of authentication and authorization specifically for web sites. It covers secure methods relevant to implementing authentication on the web, which common context for 2FA. It's a useful resource for web developers.
While published some time ago, this book remains a foundational text in applied cryptography. Understanding the cryptographic principles behind many authentication methods, including those used in 2FA, is crucial. provides a comprehensive survey of these techniques and valuable reference for those wanting to understand the 'how' behind secure authentication.
This textbook covers fundamental concepts in information security, including access control, authentication, and protocols. It provides a solid academic foundation for understanding the principles behind 2FA as part of an overall security strategy. It's suitable for students and professionals seeking a structured approach to learning information security.
Provides a comprehensive overview of computer security. It covers a wide range of topics, from basic security principles to advanced topics such as cryptography and network security. It is written by a renowned cybersecurity expert with over 40 years of experience.
Offers a beginner-friendly introduction to Microsoft Active Directory, a core technology for user management in Windows environments. It's suitable for those new to the topic, providing a broad understanding of AD's structures and functions. This book is particularly helpful for providing background knowledge for those starting in IT administration.
This foundational textbook on operating systems includes dedicated chapters on file systems and security, which cover the theoretical underpinnings of file permissions. While not Linux-specific, it provides a crucial academic perspective on how operating systems manage access control. It is widely used as a textbook in undergraduate and graduate computer science programs.
Provides a beginner-friendly introduction to backup and restore for SQL Server environments. It covers essential techniques for data loss management and prevention. This good starting point for database administrators who are new to SQL Server backup and recovery. It offers practical, step-by-step guidance.
The CISSP certification covers a wide domain of information security topics, including identity and access management, which encompasses authentication and authorization. This official study guide provides a comprehensive overview of these concepts as they relate to enterprise security. It's a valuable resource for security professionals seeking a broad understanding and certification.
Provides a comprehensive overview of Identity and Access Management (IAM), covering key concepts and considerations for designing and implementing IAM solutions. It's a good resource for understanding the broader landscape of user management beyond basic system administration. This book is more valuable as additional reading for those seeking a business perspective on IAM.
Provides a practical guide to cybersecurity for beginners. It covers a wide range of topics, from basic cybersecurity principles to specific threats such as phishing and malware. It is written by a cybersecurity expert with over 10 years of experience.
This book, while older, classic in Unix security and provides in-depth coverage of file permissions as a fundamental security mechanism. It offers valuable insights into how permissions can be exploited and how to secure systems effectively. While some technical details may be dated, the core principles of file permissions and security remain highly relevant.

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