PlayStation Network, often abbreviated as PSN, is an online multiplayer gaming and digital media delivery service provided/run by Sony Computer Entertainment for use with the PlayStation 3, PlayStation Portable, and PlayStation Vita video game consoles. The PlayStation Network is the video game portion of the Sony Entertainment Network.
On April 19, 2011 the PlayStation Network (and later also Sony Online Entertainment's network) was temporarily put offline due to a "compromise of personal information as a result of an illegal intrusion". At the time of the intrusion, the network consisted of "approximately 130 servers, 50 software programs and 77 million registered accounts".
Sony's second console, the PlayStation 2, had a limited number of online features in select games via its online network. It required a Network Adaptor, which was available as an add-on for original models, and integrated into the hardware on slimline models. However, Sony provided no unified online service for the system, so support for network features was specific to each game and there was no interoperability of cross-game presence.