JPL eventually realized one of their systems had been compromised, possibly because they were watching for any unauthorized changes to the VMS Loginout and Show programs. They must have reverse engineered the binaries to identify how the programs were being modified and decided it was the Computer Chaos Club who had gained access. JPL management went to the media with that version of the story, which led to huge news coverage about the German hackers who had been caught breaking into the JPL computers. Lenny and I chuckled over the incident. But at the same time, we were a bit nervous because we were detected.