They do it on the reg, already known long before the Bloomberg article https://arstechnica.com/tech-policy/2014/05/photos-of-an-nsa-upgrade-factory-show-cisco-

They do it on the reg, already known long before the Bloomberg article https://arstechnica.com/tech-policy/2014/05/photos-of-an-nsa-upgrade-factory-show-cisco-router-getting-implant/ https://arstechnica.com/tech-policy/2014/05/photos-of-an-nsa... https://en.m.wikipedia.org/wiki/NSA_ANT_catalog https://en.m.wikipedia.org/wiki/NSA_ANT_catalog USB/Ethernet sockets with implants etc