https://dovecot.org/mailman3/archives/list/dovecot@dovecot.org/thread/7WN335LXOZV32K7VIH42YMRXJXVMQMEV/
[Dovecot] Authentication cache, failure to login after changed password - dovecot - dovecot.org
authentication cacheto logindovecotfailurechanged
https://www.computerweekly.com/news/252456861/New-stolen-credentials-cache-puts-spotlight-on-authentication
New stolen credentials cache puts spotlight on authentication | Computer Weekly
The discovery of billions more stolen usernames and passwords in Collections #2 to #5 have prompted fresh calls for the implementation of better authentication...
spotlight onnewstolencredentialscache