The attack vector I'm worried about is a website I use improperly storing passwords (plaintext, etc) and having a leak. To protect against this I use a unique p

The attack vector I'm worried about is a website I use improperly storing passwords (plaintext, etc) and having a leak. To protect against this I use a unique password per website. I cannot possibly remember a unique, secure password for every website I use. So, I use a password manager.