Virus/ Trojan in Cache File in compressed backup cause problems?

Since it's in a cache file, even if you do a complete restore it will likely be purged by the OS almost immediately.  The only problem you'll have is with the alerts warning you there's an infected file.  You can navigate to the file from within Time Machine and remove all backups of it as the best prevention method (SAV won't delete files from backup archives).

Hi, Andrew,

I want to remove all the cache files from Time Machine.

I'll mark this as an accepted solution, since it is, but need to continue the discussion found here, please:

Greatly detailed post about removing infected cache files from Time Machine

Thank you!

Quandary