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Double encoding is usually used as an attack technique to bypass authorization schemes or security filters that intercept user input. [2] In double encoding attacks against security filters, characters of the payload that are treated as illegal by those filters are replaced with their double-encoded form. [3]
XSS worms exploit a security vulnerability known as cross site scripting (or XSS for short) within a website, infecting users in a variety of ways depending on the vulnerability. Such site features as profiles and chat systems can be affected by XSS worms when implemented improperly or without regard to security. Often, these worms are specific ...
Cross-site scripting (XSS) [a] is a type of security vulnerability that can be found in some web applications. XSS attacks enable attackers to inject client-side scripts into web pages viewed by other users. A cross-site scripting vulnerability may be used by attackers to bypass access controls such as the same-origin policy.
Additionally, while typically described as a static type of attack, CSRF can also be dynamically constructed as part of a payload for a cross-site scripting attack, as demonstrated by the Samy worm, or constructed on the fly from session information leaked via offsite content and sent to a target as a malicious URL.
Self-XSS (self cross-site scripting) is a type of security vulnerability used to gain control of victims' web accounts. In a Self-XSS attack, the victim of the attack runs malicious code in their own web browser, thus exposing personal information to the attacker.
XSS refers to an injection flaw whereby user input to a web script or something along such lines is placed into the output HTML without being checked for HTML code or scripting. Many of these problems are related to erroneous assumptions of what input data is possible or the effects of special data.
A gray box penetration test is a combination of the two (where limited knowledge of the target is shared with the auditor). [6] A penetration test can help identify a system's vulnerabilities to attack and estimate how vulnerable it is. [7] [5] Security issues that the penetration test uncovers should be reported to the system owner. [8]
A classification of SQL injection attacking vector as of 2010. In computing, SQL injection is a code injection technique used to attack data-driven applications, in which malicious SQL statements are inserted into an entry field for execution (e.g. to dump the database contents to the attacker).