On Ashton Kutcher and Secure Multi-Party Computation

Back in March I was fortunate to spend several days visiting Brussels, where I had a chance to attend a panel on “chat control“: the new content scanning regime being considered by the EU Commission. Among various requirements, this proposed legislation mandate that client-side scanning technology be incorporated into encrypted text messaging applications like Signal, WhatsApp and Apple’s iMessage. The scanning tech would examine private messages for certain types of illicit content, including child sexual abuse media (known …

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