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AvoidUsingBrokenHashAlgorithms.md

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AvoidUsingBrokenHashAlgorithms

Severity Level: Error

Description

Avoid using the broken algorithms MD5 or SHA-1.

How

Replace broken algorithms with secure alternatives. MD5 and SHA-1 should be replaced with SHA256, SHA384, SHA512, or other safer algorithms when possible, with MD5 and SHA-1 only being utilized by necessity for backwards compatibility.

Example 1

Wrong

Get-FileHash foo.txt -Algorithm MD5

Correct

Get-FileHash foo.txt -Algorithm SHA256

Example 2

Wrong

Get-FileHash foo.txt -Algorithm SHA1

Correct

Get-FileHash foo.txt