There is always a doubt about their methodologies --- One always has to take these estimates with caution indeed (as we warned in the course materials). The conservative estimates seem to be rather low because of latency but of course one can question the methodologies of McAfee and likes because they have vested interest in these growing numbers. There is no perfect methodology for evaluating the losses from cybercrime: we can't fully trust these figures but we can assume the real figures are indeed high in any case.

Source author: Tatiana Tropina tatiana.tropina@gmail.com