In the context of OpenBullet, a wordlist (often referred to as a "combo list") is a structured text file containing pairs of data, typically formatted as username:password email:password

Subscribe to threat intelligence feeds (like SpyCloud or HIBP). These services provide hashes of known compromised passwords. At the firewall or identity provider (Azure AD/Okta), block any password that appears in the current top 1,000 of the corpus.