Go's new Secret Mode explained

Go's new secret mode package automatically erases sensitive data from registers, stack, and heap after use, protecting against memory exposure attacks. The feature addresses security vulnerabilities like cold boot attacks, memory dumps, and side-channel exploits by actively zeroing memory containing passwords, cryptographic keys, or tokens. Unlike manual cleanup, secret mode prevents compiler optimizations from removing security-critical zeroing operations, marking a shift from Go's traditional focus on memory correctness to confidentiality protection.