Moreover, by diluting the network providers' goodwill and relationship with their users, GCHQ could also have violated the ECHR, they added.
Privacy International already filed two other complaints with the Tribunal over the Snowden revelations. The first one was filed last July and concerns alleged mass surveillance on U.K. citizens via GCHQ's Tempora and the NSA's Prism program. A week-long public hearing for that case is set to begin on July 14, Rispoli said.
A second case was filed in May over GCHQ's and NSA's alleged ability to infect computers and mobile devices with malware, giving them control over the devices to switch on users' microphones or cameras, listen to phone calls and track locations. That case is still pending, Rispoli said.
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