A Smart Scan and Malware Scan did not detect anything...
That is because the malicious file was blocked while being downloaded to your PC. There is no malicious file in your PC.
a) 'If' a detected threat ever got into my system, what would the pop-up message state instead of 'Threat Blocked?'
I am not the master of GUI
TM, but the message would be similar. Only the object wouldn't start with "http" but with "C:/" or something similar.
b) Why did the VBS.Malware-gen infection in mid Feb (that affected all Avast users) and the IDP Generic infection (that I had in late Feb regarding the Gravis Dialer) get placed into the Virus Vault even though they were 'Blocked Threats' but this HTMLScript-inf infection, also a 'Blocked Threat,' was not placed in the Virus Vault?
Once again, these are different files:
- If you have a file on your PC, and we detect it (by any detection), it goes to vault so you do not lose it.
- If you try to download a file to your PC, and we detect it (by any detection), the download is interrupted and the "part of the file that was already downloaded" is deleted. We are assuming here that if it was downloaded, there is no reason to fear about "losing" the file, as it can be easily downloaded again.