Well I think it's a Grand Theft Auto HACKING game that took place in San Francisco.
This story is about Marcus and their comrades at Dedsec, plotting to take down Blume, the company who creates the ctOS 2.0 which exposes every privacy, information, and everywhere.
Hacking nearby using smartphone? Looks interesting.
This game is a badass! Rated 9/10. I'll play that game someday.
Edit: That Blume Arena in Oakland looks almost the same as Oracle Arena.