The security system that underlies the internet makes use of a curious fact: You can broadcast part of your encryption to make your information much more secure.

One good way to do that is with encryption. An encryption algorithm encodes data, rendering it unreadable to those who don’t possess the decoding key.

A new vulnerability in Apple Silicon chips can allow a determined attacker to access a user's data by stealing the cryptographic keys — and a fix could considerably impact encryption performance.