Trap!

Trap! is a gang of programs lurking in a file or node which attack the 'runner when he accesses it. When sprung, three identical Asp programs attack the 'runner. If one or more get through, the trace to the 'runner's system is reported to the sysop or meat security, so the 'runner's physical location is known.

Options: Invisbility

Source

 * Rache Bartmoss Brainware Blowout, pg.87