The worldwide outage for the PlayStation Network didn't last long, then; the PSN has resumed service.
You can now successfully sign back into your PlayStation Network account with the service having its full functionality restored.
So, rest assured, it's not a hack from Anonymous, as they infamously carried out on the PlayStation 3's online network last year. The hack itself lasted much longer than the aforementioned downtime with PSN users having to experience a month-long outage, which also led to Sony losing more than $160 million, while several other major publishers lost millions as well.
The hacking group decided to attack Sony's entities due to the company's legal battle with George "Geohot" Hotz, who initially managed to crack the company's console. Ultimately, it ended in hugs and kisses between the hacker and the multi-billion dollar firm.
Elsewhere, Sony confirmed users were having trouble signing into the service with the following tweet:
We are aware that some of you are having issues accessing PSN, and we're working to restore service to all. Thank you for your patience.
Previously, users were being notified that their passwords are weren't valid and the fact that they need to change it.