As you probably know, the latest PS3 firmware was cracked in no time, so it wasn't very effective at preventing pirated games from being played? According to the latest news, it seems that Sony has still got a few tricks up in its sleeve.
As you know, latest firmware comes with a feature that can disable existing jailbreaks and increase console's security that way, but it seems that there were more tricks in the PS3 firmware than first thought. As soon as you log in to the PlayStation Network, you automatically download a remote code that allows Sony to alter the code and add new security checks without releasing a completely new firmware. Of course, PS3 users aren't happy about this because they don't want Sony's rootkits in their consoles because it can potentially create a new entry point for hackers.

Anyhow, this might not be the best way to fight piracy, but it too invades the privacy of their users, but so far its been proven to be effective.

[via CrunchGear]