Avast web shield constantly tests the information you see as you surf the internet and stops any potential threats in real-time. This protects you against ransomware that blocks your files and requires a payment to unlock them. It also protects you from Trojans that pretend to be legitimate software, but actually infect your device with malware. Web shield also identifies phishing websites that attempt to steal personal information.
Avira has a variety of settings you can configure to customize the way that avast web shield functions. For instance, you can change the sensitivity setting which controls the level of how avast web shield scans data every time you connect to the internet. You can also turn off or on HTTPS scanning, script scanning, and block botnet attacks. You can also create a list of exclusions to prevent certain applications from being detected by web shield.
If directory avast web shield detects malware, potentially unwanted program (PUP) or a suspicious files on your computer it will attempt to fix it first. If it cannot be repaired, avast will move the file to Quarantine and notify the user of its detection. You can also create a default option that avast will perform when a threat has been detected.
If a website or an app which you have verified to be safe is blocked by Avast you can add it to the list of exceptions to ensure it never gets blocked again. This can be done by clicking on the Real-Time Shields Tab, and then selecting either the Web Shield (or File Shield) item from the list. The Avast Security app and Avast One app have slightly different methods for adding websites or apps to the list of exceptions.