For eight years, government officials turned to Dennis Montgomery, a California computer programmer, for eye-popping technology that he said could catch terrorists. Now, federal officials want nothing to do with him and are going to extraordinary lengths to ensure that his dealings with Washington stay secret.
The Justice Department, which in the last few months has gotten protective orders from two federal judges keeping details of the technology out of court, says it is guarding state secrets that would threaten national security if disclosed. But others involved in the case say that what the government is trying to avoid is public embarrassment over evidence that Mr. Montgomery bamboozled federal officials.