i think the best way will be to submit a ticket to Avert team to check this.
Btw, have you changed any other filters like URL filter, URL Reputation and so on. Perhaps other filters are blocking malicious requests and therefore there is nothing to scan for GAM?
Nothing changed at all. We've tested links previously detected as PUP. Nothing. Also on our test system with reduced policy. (only AV scanning)....
do you have some sample links for me? Are they public?
I can test them in my Environment, additional with ATD.
I'd suggest checking your update logs. The new AV engine has been a slow phased roll out.
You may have just been at the tail end of it.
Please also let us know what version you are running, I know in 7.4.2 there were changes surrounding PUPs detection that may now be reflected in the engine update.