Explain Cross-site scripting attacks
Cross-Site Scripting (XSS) attacks are a type of security vulnerability that allow an attacker to inject malicious code into a web page viewed by other users. This can happen when the website does not properly validate user-supplied input, such as in a form or search bar. The attacker's malicious code is then executed by the browser of the victim, who visits the infected page, potentially exposing sensitive information such as passwords and credit card numbers. XSS attacks can be divided into two types: stored and reflected. Stored XSS attacks involve injecting malicious code into a database that is later displayed on a web page. Reflected XSS attacks occur when malicious code is injected into a search bar or form and is immediately reflected back to the user, executing the malicious code in their browser.
Cross-site scripting (XSS) is a security vulnerability in web applications where malicious code is injected into a web page viewed by other users. There are two types: stored and reflected. Stored XSS involves the attacker injecting malicious code into a vulnerable web page stored on the server. Reflected XSS involves injecting malicious code into a web page through a user input. To prevent XSS, user input should be properly validated and displayed data should be encoded. Content Security Policy (CSP) can also be used to specify allowed sources of data and scripts.