A 5-year-old San Diego boy has outwitted the sharpest minds at Microsoft - he's found a backdoor to the Xbox.

Xbox One (George Pimentel/Getty Images for Microsoft)

Kristoffer Von Hassel managed to log in to his father's Xbox Live account. When the password log-in screen appeared, Kristoffer simply hit the space button a few times and hit enter.

Davies, who works in computer security, says he reported the issue to Microsoft, which fixed the bug and recently listed Kristoffer on its website as a "security researcher."

A Microsoft statement says "we take security seriously" and thanks customers for highlighting issues.

It's not the Kristoffer's first triumph. At a year old, he bypassed a cellphone toddler lock by holding down the "home" button.

(© 2014 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.)