170 cybersecurity experts warn that British government's contact tracing app could be used to surveil people even after coronavirus has gone, 29 April 2020 

177 cybersecurity and privacy experts have signed an open letter to the UK government asking it to ensure the contact tracing app it's deploying to track the spread of coronavirus doesn't then get used as a mass-surveillance tool.

The UK announced this week it was eschewing Apple and Google's contact-tracing API to build its app, which will process users' data centrally.

Experts warn this could create a database that could then be used to de-anonymize users.