Hidden inside the BMP (bitmap) file format that forms the image in the ad you’re looking it is compromised JavaScript that executes inside your browser. If you’d like to have fewer ads without turning off JavaScript, there’s a number of popular Chrome Ad Blockers. One thing you’ll have notice with JavaScript turned on, there’s a lot more ads. Or to steal sensitive information directly. It can also be used to capture keystrokes, stealing personal data and passwords in the process. It can be used to perform unauthorized activities and phishing attacks. Cross-site scriptingĬross-site scripting (XSS) is a type of injection technique that allows the attacker to inject malicious code into a vulnerable web application to hijack the interactions users have with it. So if attackers embed script tags like, ,, or into a website’s code, your browser’s JavaScript engine will run that script. These attacks take advantage of the fact that your browser has the ability to interpret and turn on any script that’s embedded in HTML by default. Script injections can be used to do anything from altering a website’s appearance to accessing user account data. Popular JavaScript Attacksĭuring an attack, which methods are used most often? Script injections Down’t download unknown files, don’t enter personal information in sites that you don’t trust, and avoid aggressive sites.
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