Re: ...mechanisms that can be used by investigators...
I am reminded of a tale from way back in the 1960s, where a cafe frequented by many folks that the police and authorities greatly distrusted were wont to gather and talk. Whenever anyone got up to leave this cafe, the owner would step over, hand them a coin and a the cafe's phone number on a piece of paper and ask them to phone the cafe from a phonebox a long way away, any phonebox as long as it was not the same one all the time.
The patron would call the cafe, and be told that the riot was to be at such-and-such park on a set date.
The day of the riot came, and the police were all there, arrayed in their ranks with full firearms, TSG and air support. Hundreds and hundreds of them were there, waiting for the trouble. Also present was a very elderly man with an even more antiquated scottie dog.
The moral is this: if criminal know that a medium is mnitored as that phone was, they'll send false messages. The police appear to have forgotten this.
Biting the hand that feeds IT
