Hi Caroline, where is this information shown? If it is on the Passwords page, the way I understand the "Vulnerable Password" warning is that the warning is based on the date the password was created versus the date the site was breached. So it should not appear for any newly created passwords -- unless they are identical to other "vulnerable passwords" previously noted on the page. See: [[Firefox Password Manager - Alerts for breached websites]]. If you get a "Vulnerable Password" warning for a newly saved unique password, it sounds like there is a bug in that feature. If the information was reported to you in a Monitor email, or you see it in a search on the Monitor site (https://monitor.mozilla.org/), it would be strange if they were breached so quickly after you created them.