The police may be hacking your network without a warrant.
The good news is - well, let's hope they've outsourced the project to a large IT consultancy, in which case it will go in five years late, 300% over budget, and have lost 80% of the envisaged functionality - you know, all the features which sold it to the government in the first place (on that somewhat hazy consultancy-funded 'evaluation week' held on a private estate with hot and cold running women) .
According to a Times commenter IPCop, TrueCrypt, PGP are the things you need to ward off the baddies. Trouble is that for many of us, it's all a bit of a hassle.
3 hours ago