How do XSS attacks happen?
Websites store data and send information to your browser all the time: XSS attacks happen when untrusted sources send users malicious content via vulnerabilities in the websites to your browsers that will then go on to steal your data or harm your PC. For example: when a user searches for something online, the website will then send information to the browser in the form of search results. In a XSS attack, the information they send back can contain malware that might steal your data. Because nearly every website requires storing and sending data to browsers, XSS is the most common security vulnerability in software today.
How can you recognize a XSS attack?
Unfortunately, your browser has no way of knowing if a script should not be trusted and will automatically execute any scripts it receives. This means that malicious scripts can access any sensitive information that the browser has stored, or has saved on the webpage. This makes XSS attacks pretty much impossible to recognize.
How can you remove XSS vulnerabilities?
It’s the job of the owner of the website to find and remove XSS vulnerabilities since that’s where the malicious code lurks, infecting unwitting visitors. Asking people to protect themselves by avoiding suspicious websites doesn’t work in this case as these vulnerabilities affect all websites, trusted and untrusted ones alike. Fortunately, there are tools online you can download to scan websites to check for XSS vulnerabilities.
How to prevent a cross-site scripting attack
Install top-rated antivirus software on your computer
Set your software settings to update automatically
Download a scanner which can check for vulnerabilities in a website’s code
Protect yourself against a cross-site scripting attack
In order to protect yourself from an XSS attack, it’s not enough to avoid untrusted websites. To keep any infections from spreading onto your PC and doing untold damage to your machine or stealing your data, it’s good to have a top-rated antivirus installed, such as Avast Antivirus.