I already have that, is it enough though?
Locking your accounts at the credit bureau level prevents many credit accounts from being opened in your name, which is big issue with having your info out there.
I would also talk to existing bank(s) to see if I could add a passcode instead of mother's maidens name, 2FA method and so on, setup alerts, and close out unnecessary banks, etc.
Once you've locked down your reports, there's nothing really actionable to do. If you've got evidence of actual stuff going on, maybe figure out if you can get enhanced security at your banks, so it's harder for someone with your information to 'recover' your account, but SSNs are more or less public information at this point.