@leocg said in Windows Defender detecting Virus JS/Adrozek.A:

Those getting the alert should contact Microsoft and ask why the alert is popping up.

The alert pops up when some task in Opera re-creates the file named c0ac6bec106548d2_0 and it happens just leaving the browser open on the home page.

@mouse said in Windows Defender detecting Virus JS/Adrozek.A:

I can't open the suspect js cache files because Defender quarantines them.

You can access the quarantined file closing Opera (just to prevent code execution) and restore them from Defender's history.

Very same problem here, it started to happen from 02/09 browsing ansa.it website: history for the last days recorded negligible browsing with just the usual 3 tabs opened (youtube (for music) , gpone and amazon; no extension added in months.

A full disk scan with Defender found the same threat in 4 different cache files and removed them: alerts still coming from the above mentioned file regenerating in js cache but any new full scan now is clean.