During a recent shareholders' meeting, Sony CEO was discussing the PSN hack and Sony's handling of the situation when a shareholder asked him to step down. The request was made with a view to allowing the company to make a fresh start following what is widely believed to be the biggest security breach in the history of the Internet, reports Reuters.

Stringer did not respond directly to the calls for him to step down, instead focusing on the fact that network security -- or the lack thereof -- is of growing concern to many companies, not just Sony, particularly in the wake of recent actions by LulzSec and other hacker groups. The fact that no-one has yet claimed responsibility for April's attack on PSN and Sony Online Entertainment's systems is also a concern.

"I think you see that cyber terrorism is now a global force, affecting many more companies than just Sony," he told the meeting. "If hackers can hack Citibank, the FBI and the CIA, and the video game company Electronic Arts, then it's a negative situation that governments may have to resolve."

Reuters reports that usage of PSN has returned to around 90% of the level it was before the security breach, though the service is still not yet back up in Japan.

Stringer was criticized during the PSN debacle for remaining silent when many believed he should be addressing customers' concerns directly.