// THREAT DETECTION AND DATA PRIVACY TERM
Cross-Site Scripting
Cross-Site Scripting (XSS) is a type of cyber attack where malicious scripts are injected into trusted websites. When other users visit the compromised site, their web browsers unknowingly execute these scripts, which can steal data or deface the site.

TECHNICAL DEFINITION
Cross-Site Scripting (XSS) is a web security vulnerability enabling attackers to inject client-side scripts, typically JavaScript, into legitimate web pages viewed by other users. This exploit, categorized as reflected, stored, or DOM-based XSS, leverages vulnerabilities in web applications to bypass same-origin policy, leading to session hijacking, data theft, credential compromise, or website defacement.
BACKGROUND
Computer security is a subdiscipline within the field of information security. It focuses on protecting computer software, systems, and networks from threats that can lead to unauthorized information disclosure, theft, or damage to hardware, software, or data, as well as to the disruption or misdirection of the services they provide.
READ MORE ON WIKIPEDIASYNONYMS & ALIASES
- XSS
- Client-side Script Injection
- Web Scripting Attack
- Script Injection
USAGE NOTE
XSS is a prevalent web vulnerability that developers must actively guard against by sanitizing user input and properly encoding output.
DEVELOPERS
Organizations developing technology related to Cross-Site Scripting.
Invicti develops automated web application security scanners (Netsparker, Acunetix) that identify various vulnerabilities, including Cross-Site Scripting (XSS), through dynamic application security testing (DAST).
Veracode provides a comprehensive application security platform offering static (SAST), dynamic (DAST), and software composition analysis (SCA) to identify and remediate vulnerabilities like XSS across the software development lifecycle.
Synopsys offers a suite of application security testing solutions, including SAST (Coverity) and DAST (Seeker), which are used to detect and help fix Cross-Site Scripting (XSS) and other web application vulnerabilities.
Akamai provides Web Application Firewall (WAF) services as part of its cloud security solutions (e.g., Kona Site Defender), designed to protect web applications from various attacks, including Cross-Site Scripting (XSS).
Cloudflare offers a comprehensive suite of security products, including a Web Application Firewall (WAF) that actively detects and blocks attacks such as Cross-Site Scripting (XSS) to protect web applications.
Imperva specializes in web application and API protection (WAAP), providing a leading Web Application Firewall (WAF) solution that safeguards websites and applications from XSS and other cyberattacks.
PortSwigger develops Burp Suite, a widely used integrated platform for performing security testing of web applications. Its tools assist penetration testers in finding and exploiting vulnerabilities, including various forms of Cross-Site Scripting (XSS).
The Open Worldwide Application Security Project (OWASP) is a non-profit foundation that works to improve the security of software. They develop open-source tools (like OWASP ZAP for DAST) and provide extensive resources, guidelines, and methodologies for preventing and detecting vulnerabilities like XSS.
Checkmarx offers a leading Static Application Security Testing (SAST) solution that analyzes source code, bytecode, and binaries to identify security vulnerabilities, including Cross-Site Scripting (XSS), early in the software development lifecycle.