[simonblack]

The common denominator is people working in the State Department or Intelligence Services.

"Never ascribe to Malice what can also be ascribed to Incompetence"

IMHO it's a workplace-related injury of some kind. Perhaps due to (say) anti-bugging devices, or devices that aren't found in normal office environments.

[mtnGoat]

Ya, but the logic fail is... Why only in these three known locations? If CIA was using this tech in other offices, others would be effected also.