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Hardening Windows: Security Foundations Developers Can Build On | OD859

Microsoft Developer (Build) · Jun 03, 2026 · Engineering Insights

Windows is raising its security baseline by removing legacy NTLM, enforcing code trust by default, and preparing for post-quantum cryptography.

“We're raising the security baseline in Windows so you can rely on stronger defaults and your customers stay safer out of the box.”

A Microsoft Build session detailed how Windows is hardening its security foundations by deprecating the legacy NTLM authentication protocol, enforcing code trust by default, and preparing for post-quantum cryptography. While it notes AI is reshaping how attackers operate, the talk is primarily about platform security engineering rather than a core AI industry signal.

windows-security ntlm-deprecation post-quantum-crypto platform-hardening

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