HiGuys writes: "My wife and I bought a new apartment which we needed to thoroughly gut. In the process we installed Cat5e to all rooms. A few days later we ran into problems with the men doing the plastering: they weren't working, they were rude to us, and an Internet search revealed eBay scams in the past of their ringleader. They were already disgruntled, and the situation deteriorated rapidly, ending in us firing them a few days later. However, I am now worried about the network cables running everywhere in our house. I am a fairly anxious individual, and I am worried that a device could easily have been piggybacked onto our network in a place that is no longer accessible to us (inside the walls, ceiling, etc.) It seems that they could either install a device that would surreptitiously forward data/passwords out of the house, or perhaps they might have set up a rogue access point. The main problem is that I do not have enough funds left over to rip up the cabling to restore my peace of mind. Is my imagined scenario possible? Likely? Easy to fix? Has anyone had a similar experience? How would you go about restoring sanity, aside from medication/tranquilizers?"