Zuckerberg questioned at trial over technology of virtual reality

He faced hours of tough public questioning about where Oculus obtained its ideas

Facebook chief executive Mark Zuckerberg took the witness stand in Dallas federal court on Tuesday and denied an allegation by a rival company that the virtual-reality technology of Facebook’s Oculus unit was stolen.

Zuckerberg, the founder of one of the world’s largest companies, faced hours of tough, public questioning about where Oculus obtained its ideas and how much he knew about the startup when Facebook bought it for $2 billion. 

A jury is hearing evidence in a civil lawsuit brought by video game publisher ZeniMax Media Inc against Oculus in 2014, in the middle of the Facebook-Oculus deal. ZeniMax said that Oculus