Yea, they filter their e-mail platforms for sure, but part of it might be the justice department binding their hands.
People in companies that track this stuff down get special hash lists from certain law enforcement agencies and the evidence itself is pretty much a controlled substance; so they need special authorization to safely handle and report it with a chain of custody. Two Microsoft employees got PTSD because of the large amount of data they had to check:
https://www.telegraph.co.uk/news/2017/01/12/two-former-micro...
I knew a lawyer who had to defend someone in this type of case. He was allowed to view the evidence (he chose not to), but only him. No paralegals, no one else in his office that wasn't directly sitting on the defense table.
If you're not granted specific authorization, even looking at this content is illegal, so Microsoft, Facebook, Apple, Google, etc have a very limited staff of people who are even authorized to handle this stuff.
It's a difficult problem.
People in companies that track this stuff down get special hash lists from certain law enforcement agencies and the evidence itself is pretty much a controlled substance; so they need special authorization to safely handle and report it with a chain of custody. Two Microsoft employees got PTSD because of the large amount of data they had to check:
https://www.telegraph.co.uk/news/2017/01/12/two-former-micro...
I knew a lawyer who had to defend someone in this type of case. He was allowed to view the evidence (he chose not to), but only him. No paralegals, no one else in his office that wasn't directly sitting on the defense table.
If you're not granted specific authorization, even looking at this content is illegal, so Microsoft, Facebook, Apple, Google, etc have a very limited staff of people who are even authorized to handle this stuff.
It's a difficult problem.