In the UK they also search for “terrorism related content” and other types of criminal media. While this isn’t required in the US (and neither is CSAM scanning)

In the UK they also search for “terrorism related content” and other types of criminal media. While this isn’t required in the US (and neither is CSAM scanning) part of the impetus for building these systems is to satisfy non-US governments that don’t have the same constitutional protections that the US does. US law enforcement officials routinely join with their non-US counterparts in urging/pressuring US firms to implement these systems, knowing that once they’re built (non-voluntarily) for non-US compliance they will likely be turned on (“voluntarily”) for US customers as well. See e.g. this open letter to Facebook authored by US AG Barr and counterparts from the UK and Australia. https://www.justice.gov/opa/pr/attorney-general-barr-signs-letter-facebook-us-uk-and-australian-leaders-regarding-use-end https://www.justice.gov/opa/pr/attorney-general-barr-signs-l...