A user needs to complete training at https://comptiatraining.com. After manually entering the URL, the user sees that the accessed website is noticeably different from the standard company website. Which of the following is the most likely explanation for the difference?
Typosquatting(also known asURL hijacking) is a type of attack where cybercriminals register domain names similar to legitimate sites but with slight misspellings (e.g., comptiatraning.com instead of comptiatraining.com). Attackers use these fake sites tosteal credentials or distribute malware. Since the user manually entered the URL and reached an unexpected website,this strongly indicates a typosquatting attack.
Which of the following would best allow a company to prevent access to systems from the Internet?
An air-gapped system is physically isolated from unsecured networks (like the public Internet), ensuring that there is no direct or indirect network connection. This is the most effective way to prevent Internet-based access to sensitive systems.
CompTIA Security+ SY0-701 Official Study Guide, Domain 3.2: 'Air-gapped systems are isolated from external networks and prevent Internet access.'
Exam Objectives 3.2: ''Summarize security implications of embedded and specialized systems.''
A company must ensure sensitive data at rest is rendered unreadable. Which of the following will the company most likely use?
Encryption is a method of transforming data in a way that makes it unreadable without a secret key necessary to decrypt the data back into plaintext. Encryption is one of the most common and effective ways to protect data at rest, as it prevents unauthorized access, modification, or theft of the data. Encryption can be applied to different types of data at rest, such as block storage, object storage, databases, archives, and so on. Hashing, tokenization, and segmentation are not methods of rendering data at rest unreadable, but rather of protecting data in other ways. Hashing is a one-way function that generates a fixed-length output, called a hash or digest, from an input, such that the input cannot be recovered from the output. Hashing is used to verify the integrity and authenticity of data, but not to encrypt it. Tokenization is a process that replaces sensitive data with non-sensitive substitutes, called tokens, that have no meaning or value on their own. Tokenization is used to reduce the exposure and compliance scope of sensitive data, but not to encrypt it. Segmentation is a technique that divides a network or a system into smaller, isolated units, called segments, that have different levels of access and security.Segmentation is used to limit the attack surface and contain the impact of a breach, but not to encrypt data at rest.Reference:CompTIA Security+ Study Guide: Exam SY0-701, 9th Edition, pages 77-781; Protecting data at rest - Security Pillar3
An organization recently updated its security policy to include the following statement:
Regular expressions are included in source code to remove special characters such as $, |, ;. &, `, and ? from variables set by forms in a web application.
Which of the following best explains the security technique the organization adopted by making this addition to the policy?
Input validation is a security technique that checks the user input for any malicious or unexpected data before processing it by the application. Input validation can prevent various types of attacks, such as injection, cross-site scripting, buffer overflow, and command execution, that exploit the vulnerabilities in the application code. Input validation can be performed on both the client-side and the server-side, using methods such as whitelisting, blacklisting, filtering, sanitizing, escaping, and encoding. By including regular expressions in the source code to remove special characters from the variables set by the forms in the web application, the organization adopted input validation as a security technique. Regular expressions are patterns that match a specific set of characters or strings, and can be used to filter out any unwanted or harmful input. Special characters, such as $, |, ;, &, `, and ?, can be used by attackers to inject commands or scripts into the application, and cause damage or data theft. By removing these characters from the input, the organization can reduce the risk of such attacks.
Identify embedded keys, code debugging, and static code analysis are not the security techniques that the organization adopted by making this addition to the policy. Identify embedded keys is a process of finding and removing any hard-coded keys or credentials from the source code, as these can pose a security risk if exposed or compromised. Code debugging is a process of finding and fixing any errors or bugs in the source code, which can affect the functionality or performance of the application. Static code analysis is a process of analyzing the source code without executing it, to identify any vulnerabilities, flaws, or coding standards violations. These techniques are not related to the use of regular expressions to remove special characters from the input.
Reference = CompTIA Security+ SY0-701 Certification Study Guide, page 375-376; Professor Messer's CompTIA SY0-701 Security+ Training Course, video 4.1 - Vulnerability Scanning, 8:00 - 9:08; Application Security -- SY0-601 CompTIA Security+ : 3.2, 0:00 - 2:00.
Which of the following is a type of vulnerability that involves inserting scripts into web-based applications in order to take control of the client's web browser?
Cross-site scripting (XSS) vulnerabilities allow attackers to inject malicious scripts into a website, which are then executed in the user's web browser, potentially leading to data theft or session hijacking.Reference: Security+ SY0-701 Course Content, Security+ SY0-601 Book.
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