Security Baselines

๐Ÿ”’ Secure Bits ๐Ÿ’ก
๐——๐—ผ ๐—ฌ๐—ผ๐˜‚ ๐—จ๐˜€๐—ฒ ๐—ฆ๐—ฒ๐—ฐ๐˜‚๐—ฟ๐—ถ๐˜๐˜† ๐—•๐—ฎ๐˜€๐—ฒ๐—น๐—ถ๐—ป๐—ฒ๐˜€?

Security Baselines are one of the ๐—บ๐—ผ๐˜€๐˜ ๐—ฐ๐—ฟ๐—ถ๐˜๐—ถ๐—ฐ๐—ฎ๐—น ๐—ฐ๐—ผ๐—ป๐˜๐—ฟ๐—ผ๐—น๐˜€ for locking down your Windows infrastructure.

They allow you to enforce a ๐—ฑ๐—ฒ๐—ณ๐—ถ๐—ป๐—ฒ๐—ฑ ๐˜€๐—ฒ๐—ฐ๐˜‚๐—ฟ๐—ฒ ๐˜€๐˜๐—ฎ๐˜๐—ฒ across your environment via Group Policy or Microsoft Intuneโ€”hundreds of settings, centrally managed. Microsoft provides free Security Baselines. Stricter ones exist tooโ€”often behind a paywall. Or you can build your own.
(I break this down in detail inside my ๐—ช๐—ถ๐—ป๐—ฑ๐—ผ๐˜„๐˜€ ๐—œ๐—ป๐—ณ๐—ฟ๐—ฎ๐˜€๐˜๐—ฟ๐˜‚๐—ฐ๐˜๐˜‚๐—ฟ๐—ฒ ๐—ฆ๐—ฒ๐—ฐ๐˜‚๐—ฟ๐—ถ๐˜๐˜† ๐—–๐—ผ๐˜‚๐—ฟ๐˜€๐—ฒ.)

But hereโ€™s the catch: ๐—œ๐—บ๐—ฝ๐—น๐—ฒ๐—บ๐—ฒ๐—ป๐˜๐—ถ๐—ป๐—ด ๐˜๐—ต๐—ฒ๐—บ ๐—ฐ๐—ฎ๐—ป ๐—ฏ๐—ฟ๐—ฒ๐—ฎ๐—ธ ๐˜†๐—ผ๐˜‚๐—ฟ ๐—ฒ๐—ป๐˜ƒ๐—ถ๐—ฟ๐—ผ๐—ป๐—บ๐—ฒ๐—ป๐˜.

๐Ÿ’กWhy?
Because most real-world environments still rely on ๐—ผ๐˜‚๐˜๐—ฑ๐—ฎ๐˜๐—ฒ๐—ฑ ๐—ฝ๐—ฟ๐—ผ๐˜๐—ผ๐—ฐ๐—ผ๐—น๐˜€ and ๐˜„๐—ฒ๐—ฎ๐—ธ๐—ฒ๐—ฟ ๐—ฐ๐—ฟ๐˜†๐—ฝ๐˜๐—ผ ๐—ฎ๐—น๐—ด๐—ผ๐—ฟ๐—ถ๐˜๐—ต๐—บ๐˜€ like:
โ–ช๏ธRC4
โ–ช๏ธLM Hashes
โ–ช๏ธNTLM
โ–ช๏ธDES
โ–ช๏ธOlder TLS versions
…and more.
๐Ÿ”’ And Security Baselines rightfully ๐—ฑ๐—ถ๐˜€๐—ฎ๐—ฏ๐—น๐—ฒ ๐—ฎ๐—น๐—น ๐—ผ๐—ณ ๐˜๐—ต๐—ฒ๐—บ.

โ“So how do you implement baselines safely?
Treat it as a ๐—ฝ๐—ฟ๐—ผ๐—ท๐—ฒ๐—ฐ๐˜, ๐—ป๐—ผ๐˜ ๐—ฎ ๐—พ๐˜‚๐—ถ๐—ฐ๐—ธ ๐—ณ๐—ถ๐˜…. Years of ignoring best practices canโ€™t be reversed overnight.

โœ… Use Microsoftโ€™s ๐—ฃ๐—ผ๐—น๐—ถ๐—ฐ๐˜† ๐—”๐—ป๐—ฎ๐—น๐˜†๐˜‡๐—ฒ๐—ฟ to:
โ–ช๏ธCompare your current configuration vs. the baseline
โ–ช๏ธIdentify exactly what will change
โ–ช๏ธAssess potential impact to applications or services

Even though it takes time and careful planning, ๐—ฆ๐—ฒ๐—ฐ๐˜‚๐—ฟ๐—ถ๐˜๐˜† ๐—•๐—ฎ๐˜€๐—ฒ๐—น๐—ถ๐—ป๐—ฒ๐˜€ ๐—ฎ๐—ฟ๐—ฒ ๐˜„๐—ผ๐—ฟ๐˜๐—ต ๐—ถ๐˜โ€”theyโ€™re one of the strongest foundational measures in Windows security.

๐—›๐—ฎ๐˜ƒ๐—ฒ ๐˜†๐—ผ๐˜‚ ๐—ถ๐—บ๐—ฝ๐—น๐—ฒ๐—บ๐—ฒ๐—ป๐˜๐—ฒ๐—ฑ ๐—ฆ๐—ฒ๐—ฐ๐˜‚๐—ฟ๐—ถ๐˜๐˜† ๐—•๐—ฎ๐˜€๐—ฒ๐—น๐—ถ๐—ป๐—ฒ๐˜€ ๐—ถ๐—ป ๐˜†๐—ผ๐˜‚๐—ฟ ๐—ฒ๐—ป๐˜ƒ๐—ถ๐—ฟ๐—ผ๐—ป๐—บ๐—ฒ๐—ป๐˜?