Advancements in digital encryption will soon put the communications of terrorists and other criminals beyond the reach of law enforcement. And in the wake of the London Bridge attack on June 3, United Kingdom Prime Minister Theresa May pledged to work with democratic governments on cyberspace regulations to prevent the spread of extremism and terrorist planning. The press and privacy advocates criticized her when she suggested that internet encryption was providing "safe spaces" for terrorists to operate. During interviews with U.S., British and other media outlets after the attack, several journalists asked me what I thought of May's statement, half expecting me to pile on the criticism. Unfortunately, I couldn't, because in many ways I agree with what she's saying. Through digital encryption, terrorists and other criminals will soon have absolute privacy in the digital world — something they've never been able to enjoy in the physical world.