Lulz Security, the hacker group that has claimed credit for attacks on Sony Corp., Nintendo Co. Ltd. and other companies and law enforcement agencies, said it's had enough.

The group claimed to have intended to operate for only 50 days, Ars Technica reported Monday. However, the group also claimed during its Friday exposure of data from the Arizona Department of Public Safety that it planned to release more documents. The conflict may simply be one of branding: "If such releases are made, they won't be under the LulzSec brand," the article said.

The decision may be behind the political motivations of the recent attacks on law enforcement agencies, Ars Technica said. "LulzSec always maintained that it was motivated by amusement rather than political principles, and yet the decision to specifically make law enforcement agencies the target was apparently a political one."

However, LulzSec hasn't shifted its ideology completely: one of its last breaches exposed data on users of forums linked to the video game Battlefield Heroes.

Another factor in the group's retirement might be a desire to just lay low, Ars Technica said. An opposing group recently posted "a substantial amount of data about members of LulzSec yesterday, and this release may have been the straw that broke the camel's back, forcing LulzSec to drop out of the public eye," the article said.