Besides an embarrassing and/or super sexy probe, the security breach could have led to a whole series of problems. The Aegis system, an advanced computer-based weapon's system that replaced the primitive shoot-and-hope-shit-blows-up system, could have been out for everyone else to copy. That would be no good.
Also, because "Aegis Destroyer" would make for an excellent dildo name, the chances of embarrassing porn parodies spawned from what should be thought of strictly as a killing machine soared through the roof.
MI6 Sells Spy Camera on eBay
After buying a camera on eBay, a 28-year-old English postal worker found pictures of national interest mixed in with his own holiday pictures. The pics had been placed on the camera by the seller, presumably an intelligence agent who had accidentally sold his camera with pictures of terrorist leaders, missiles, rockets, fingerprints and to top it off, a detailed document relating to a Top Secret encrypted computer network used by field agents.
Our attempts to find the same were less successful.
Granted, pictures of terrorists and fingerprints and stuff isn't going to bring the world to its knees, but damn, that encrypted computer network info could have been bad times. If that info went public, for every British agent using the system to report real intelligence there would have been at least another 10 people on the system ready to call him a "newfag" within seconds of logging in.
Anyway, several interrogations later, MI6 and MI5 (kind of like the US version of CIA and CIB) were able to establish that the postal worker who bought the camera had not been snapping pictures of terrorist leaders while holidaying in the USA and, presumably, that MI6 agents hadn't been snapping pictures of tourist attractions in America. We're almost certain there is comfort to be found in both of those facts.
MI5 is like this. But with British accents.