I just noticed that the eicar - Anti-Virus test file web site has updated to include an SSL enabled protocol https download area for the eicar test file. When I download the archived test files I noticed that avast! does not pick it up at all with real-time protection because the Web Shield does not scan https. The Standard Shield does not pick it up either.
Is there a way to enable scanning within archives for the Standard Shield?
Could to be a new tactic used in the real world to get by http scanners?
Not really. You can enable archive scanning only in avast! Pro (for On-Access).
But in the end files get scanned upon extraction anyway,so you shouldn’t worry about that.
I believe it scans executable packers by default.
I’d say it’s really not a good idea to enable any “real” archives like ZIP for Standard Shield, it may have very bad impact.