SHA: Secure Hashing Algorithm - Computerphile
Why the open web links it
Explains how the SHA1 hashing algorithm works and its role in data integrity and security.
Linked by 7 independent sites, 2 of them widely read in the 2026-10 crawl of the open web, including newamerica.org, pagefreezer.com, alsciokat.com, bastidood.dev, bigblu.fr.