Business Tech giants slam UK proposal to eavesdrop on encrypted chats Updated : May 31, 2019 11:34 AM IST In an open letter published on Lawfare, a group of 47 tech firms on Thursday criticised the move, asking the agency to abandon its plans for a so-called "ghost protocol". Subscribe to Moneycontrol PRO at just Rs.33/- per month for the first year. Use code SUPERPRO. Limited period offer. Available on Web and Android.