Avast Web Shield actively tests information moving on the internet and stops any possible threats in real-time. It guards against ransomware which blocks your files and demands a payment to unlock them as well as Trojans disguised as legitimate software, but install malware onto your device. Web shield identifies phishing websites that attempt to steal personal data.

Avira provides multiple settings that you can configure to customize the way avast’s web shield operates. You can, for instance change the sensitivity setting which regulates the degree of how avast web shield scans data when you connect to the internet. You can also turn on and disable HTTPS scanning as well as script scanning, and block botnets. You can also make a list of exclusions to stop certain programs from being detected by web shield.

If avast discovers malware or a potentially unwanted program on your system, avast will try to fix the file first. If it is not repairable it will be moved by avast to file to Quarantine and will notify the user of its detection. You can also select the default action that avast will choose to take if it detects a virus.

You can add a website or an application which you are certain is secure to the exceptions list so it will not be blocked again. This can be done by clicking on the Real-Time Shields Tab and then selecting the Web Shield (or File Shield) item from the list. The Avast Security app and Avast One app have distinct methods of adding apps or websites to the exceptions lists.