The British government said Sunday that its security services must have access to encrypted messaging applications such as WhatsApp, as it revealed that the service was used by the man behind the parliament attack. Khalid Masood, the 52-year-old Briton who killed four people in a rampage in Westminster on Wednesday before being shot dead, reportedly used the Facebook-owned service moments before the assault. Home Secretary Amber Rudd told Sky News it was "completely unacceptable" that police and security services had not been able to crack the heavily encrypted service.



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