How many crimes are solved through wiretapping or evidence gathered from Facebook servers? Facebook’s 99% figure needs more context — maybe that’s 99% of just

How many crimes are solved through wiretapping or evidence gathered from Facebook servers? Facebook’s 99% figure needs more context — maybe that’s 99% of just 1% of all child abuse / sexual assault / terrorism crimes? Some more statistics would be useful to quantify the impact on criminal justice of losing either of those options. Otherwise the arguments just feel political or emotional. End-to-End won’t impact the major source of evidence in, say, sexual assaults where the victim unlocks their phone and submits a copy of their decrypted message threads to the police, though this is a controversial policing method, recently reported on in the UK: https://www.theguardian.com/society/2019/sep/21/people-report-rape-routine-demands-mobile-data https://www.theguardian.com/society/2019/sep/21/people-repor...