Existing comment:
Drill Bug:
The drill bug was designed to remain undetected during the routine search for bugs prior to the occupancy of the Soviet Embassy in Washington DC.
Bugs require only a pinhole opening to pick up a conversation; however, even tiny hole can be detected during a search. The drill bug drills its own hole from the inside out after a search.
During construction, the bug and a remote-controlled drill assembly were concealed in a cinder block installed in the Embassy's guardhouse.
After the bug search, US technicians signaled the drill to bore a shallow hole and insert the bug. If no speech was detected, the assembly repeated the drilling process, a fraction of an inch deeper each time, until the wall surface was penetrated and the bug picked up voices.
Chair Rail Bug:
In December 1999, FBI agents discovered a bug in the US State Department headquarters in Washington, DC.
In the months preceding this discovery, Stanislav Gusev, an agent working under Soviet diplomatic cover, was repeatedly observed outside the building. The FBI suspected that Gusev was receiving transmissions from a wireless bug from somewhere in the building, but where?
After an exhaustive search, FBI agents found the bug ingeniously concealed in the chair rail molding of a seventh floor conference room.
Gusev was declared persona non grata and expelled from the US. |