LONDON — The court that oversees intelligence agencies in Britain ruled on Friday that the electronic mass surveillance of cellphone and other online communications data had been conducted unlawfully.
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“We are pleased that the court has once again ruled that the U.K.’s bulk interception regime is fully lawful,” the agency said Friday in a statement, in reference to the December ruling that allowed the surveillance programs to continue. “By its nature, much of GCHQ’s work must remain secret. But we are working with the rest of government to improve public understanding about what we do.”
