Realistically, I don't think you need to be concerned in the first place. Despite years of operation, thousands of games uploaded, 10s of thousands of updates, only 6 have been found? That's incredibly impressive on it's own.
Furthermore, a community like this can ONLY exist if there is trust for the site. The admins absolutely understand this too. I have complete confidence that they are taking steps to minimize risk even farther. Maybe don't download every leak posted by a random user, but I suspect downloading posts on the front page (and recognized compresses) is 98% safe. Which is about as safe as it was prior to the injections.