Tsutomu Shimomura, V.T., Japboy

IRL Name: 
Tsutomu Shimomura

Tsutomu Shimomura ( 下村務 ) is a Japanese-American scientist and computer security expert based in the United States, who gained fame when he, together with computer journalist John Markoff, tracked down and helped the FBI arrest hacker Kevin Mitnick.

Takedown, his 1996 book on the subject, was later adapted for the screen in Takedown in 2000. He is currently the CTO and CEO of Neofocal, a company that created single conduit LEDs.


Went before Congress with an oki 900 phone and acted like he was the shit.

Loves to write about going to restaurants.

Raised 9 million USD for Neofocal


Moved to Nevada to be closer to Mitnick

Threatened AOL to get the AIM name "TsutomuShimomura".

Hacked DSL modems to remind him of his oki900 days