London 420 police surveillance

Every year thousands of Londoners celebrate 420 in a large park known as Hyde park. As a Londoner and occasional cannabis smoker I was at hyde park. The Metropolitan police have been known to use IMSI catchers at the event, with this year likely being no different. However, a short time after I arrived I called a friend so we could meet among the crowd. Upon making the call the message "Conditional call forwarding active" apeared as a system message. …

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