Twitter cuts ties with firm believed to help police spy on activists

‘Twitter is doubling down on its commitment to opposing police use of its data for surveillance. The social network has severed its contract with Media Sonar, which produces surveillance software used by 19 local government agencies.
The social media giant cut Sonar off in October as part of its commitment to opposing the use of its data by companies that offer mass surveillance tools to law enforcement. Media Sonar was guilty of doing so, Twitter confirmed to the Daily Dot on Friday.’
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