A Controversial Plan to Encrypt More of the Internet

The security community generally agrees on the importance of encrypting private data: Add a passcode to your smartphone. Use a secure messaging app like Signal. Adopt HTTPS web encryption. But a new movement to encrypt a fundamental internet mechanism, promoted by browser heavyweights like Google Chrome and Mozilla's Firefox, has sparked a heated controversy. The changes center around the Domain Name System, a decentralized directory that acts essentially as the internet's address book.

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