The ex-chief executive will step down in June, to pursue some mysterious new opportunities he didn't divulge.
Nearly a year after the company replaced him as CEO, Stringer announces he will step down from the board of directors in June.
Sony CEO Sir Howard Stringer has stepped down as chief, replaced by PlayStation veteran Kazuo Hirai.
Kazuo Hirai, who led Sony's PlayStation gaming business and more recently took over a growing electronics group, is now chief executive.
Kazuo Hirai, now head of the company's videogame group, will be Sony's next president, Nikkei reports. Howard Stringer remains chairman and CEO.
Sony boss Sir Howard Stringer has said the company was targeted by hackers for trying to protect its intellectual property. Stringer was also asked to step down as CEO.
Sony CEO Sir Howard Stringer has hit back at critics, defending Sony's handling of the PlayStation Network security breach that saw hackers make off with millions of users' personal data.
Stringer offers explanation for Sony's slow response, as meanwhile company offers year of free ID-theft monitoring to U.S. customers who were registered with PlayStation Network and Qriocity prior cyberattack.
On the stand, an Apple designer Christopher Stringer recounts how the company takes a device from brainstorming to market, including sitting around a kitchen table.
Sony's Howard Stringer will be replaced by Kazuo Hirai on April 1. It's a smart move that has as much to do with Stringer's mistakes as with Hirai's own qualifications.