It is easy to think everyday measures in security are actually worthwhile, if nothing else because we’re doing them. But many of them seems to be just ignorant people getting bad ideas and promoting them. The hysteric airport passenger screening. Swedish FRA (signaltapping). And of course, CCTVs. Now, I generally don’t mind CCTVs, but lets not forget that they, too, are kind of worthless. Here’s what Bruce Schneier has to say:

Pervasive security cameras don’t substantially reduce crime. There are exceptions, of course, and that’s what gets the press.