Robert Lyttle, 20, of Pleasant Hill was scheduled to be arraigned in San Francisco Monday.
He is accused of breaking into a number of federal agencies' computers in April 2002, including the Department of Defense's Defense Logistic Information Service (DLIS), Office of Health Affairs (OHA), and the National Aeronautic and Space Administration's (NASA) Ames Research Center.
The indictment alleges that Lyttle gained unauthorized access to DLIS computers in order to obtain files that he later used to deface an OHA web site. It also alleges that he broke into a NASA ARC computer and obtained information that he used to deface a web site hosted by the computer.
