Chrome and Firefox Block Pirate Bay Over 'Harmful Programs' (torrentfreak.com)
An anonymous reader shares a TorrentFreak report: Chrome and Firefox are actively blocking direct access to the The Pirate Bay's download pages. According to Google's Safe Browsing diagnostics service TPB contains "harmful programs," most likely triggered by malicious advertisements running on the site. Comodo DNS also showed a "hacking" warning but this disappeared after a few hours.
I can assure you, as a professional game programmer, that I've never even heard of such a practice. That's not to say it hasn't ever been done or tried, but I certainly haven't heard of such an instance, at least from inside the industry. I'm pretty sure that videogame companies don't want people to associate their games with malware either, even if they're not getting a sale. I also don't believe that it's the groups who crack programs' DRM that do this. Like you said, they've also got a reputation that would be damaged.
As an author myself, I'll be releasing my game DRM-free (well, the PC versions at least, but other platforms are out of my control) and cryptographically signed. Even when it's pirated (which is pretty much inevitable), people will know it's not been tampered with and is safe to play. I'd prefer them to have fun with the game, and maybe in the future they'll become a paying customer.
Irony: Agile development has too much intertia to be abandoned now.