"How did I get infected?, With steps so it does not happen again!
Did Avast provide a specific file name associated with this malware threat and if so, where was it located (full file path) at on your system?
When an anti-virus quarantines a file by moving it into a virus vault (chest), that file is essentially disabled and prevented from causing any harm to your system. The quarantined file is safely held there and no longer a threat
until you take action to delete it. One reason for doing this is to prevent deletion of a crucial file that may have been flagged as a "False Positive
". If that is the case, then you can restore the file and add it to the exclusion or ignore list. Doing this also allows you to view and investigate the files while keeping them from harming your computer. Quarantine is just an added safety measure
. When the quarantined file is known to be bad
, you can delete
it at any time.
Keep in mind, however, that if these files are left in quarantine, other scanning programs and security tools may flag them while in the quarantined area.
Get a second opinion on whether or not your system is clean by performing an Online Virus Scan
like BitDefender.(These require Internet Explorer to work. Watch the Address bar in IE. You may receive alerts that "This site might require the following ActiveX control...Click here to install...". Click on that alert and then Click Install ActiveX component. If given the option, choose "Quarantine" instead of delete.)