Even more scary – it could be a Trojan Horse.
I wrote a short story a few years ago about an enemy state using just this mechanism to disrupt communications during a crisis.
Be careful if you are buying networking gear off of eBay – you may be getting more (or less) than you think you are!
SAN FRANCISCO Counterfeit products are a routine threat for the electronics industry. However, the more sinister specter of an electronic Trojan horse, lurking in the circuitry of a computer or a network router and allowing attackers clandestine access or control, was raised again recently by the F.B.I. and the Pentagon. The new law enforcement and national security concerns were prompted by Operation Cisco Raider, which has led to 15 criminal cases involving counterfeit products bought in part by military agencies, military contractors and electric power companies in the United States. Over the two-year operation, 36 search warrants have been executed, resulting in the discovery of 3,500 counterfeit Cisco network components with an estimated retail value of more than $3.5 million, the F.B.I. said in a statement.