Hello everyone,
I recently transferred some files from an old computer to a new one via USB. I never saw a notification from Bitdefender, so I don't know if it happened right away or later on, but at some point Bitdefender quarantined a json file I had created and which had been part of that transfer. I understood why it happened - the json file had notes from a cybersecurity course and included code examples related to php webshells, and Bitdefender indeed said it was a php webshell.
However, what confused me is that Bitdefender also quarantined several hundred seemingly unrelated files that were not part of the USB transfer (games, installers, explorer/system files, manufacturer files, etc.) as part of its "cleanup routine following the removal of a threat". Is this simply an unfortunate quirk that can occur, or should I interpret it as a sign that there was actually some further infection that I was unaware of? I did a full system scan afterward, and nothing was found.
Of course, my hard drive is kind of cluttered and I was thinking of reinstalling Windows anyways. Is it even worth investigating the potential infection, or would using the Windows option to 'Reset this PC' for reinstalling Windows be a reasonable option to call it resolved? Any feedback is appreciated.
Thanks and best regards.