Avast Web Shield is constantly testing the movement of data on the internet and blocks 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 into your device. Web shield also identifies phishing websites that attempt to steal personal information.
Avira offers a variety of settings to modify the way avast Web Shield operates. For instance, you can alter the sensitivity settings, which controls the aggressiveness with which avast Web Shield scans your data whenever you connect to the internet. You can also enable or disable HTTPS scanning as well as script scanning, and block botnets. You can also make an exclusion list to prevent certain programs from being detected by the web shield.
If avast’s web-based security detects malware, potentially unwanted program (PUP), or suspicious files on your computer it will attempt to fix it first. If it is not repairable then avast will transfer the file to Quarantine and notify you of its discovery. You can also create a default option that avast will perform when a threat is identified.
You can add a web page or app that you are sure is safe to the exceptions so it will not be blocked again. This can be done by clicking 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 slightly different methods for adding apps or websites to the list of exceptions.