"Collisions in the cryptographic hash functions are extremely unlikely to happen"?

[msaindane]

MD5 and SHA-1 are affected by collisions. Probably modify this sentence.

You do cover this under "Secure Hash Algorithms", so the above statement somehow contradicts.

Reference: https://en.wikipedia.org/wiki/MD5#Collision_vulnerabilities https://security.googleblog.com/2017/02/announcing-first-sha1-collision.html

[zatricky]

A good idea to clarify as it is simply ambiguous.

All hash functions have collisions. Obsolete hash functions are extremely unlikely to have collisions you find "accidentally", while with "current good" ones you are extremely unlikely to find collisions "purposefully".