ST. PAUL, Minn. (AP) — Minnesota officials say driver’s license data on 18 residents was accessed after a password-protected portal was inadvertently opened online.

The Department of Public Safety said Monday the breach happened when a server update accidentally removed the authentication process to access the state’s driver’s license database. Two individuals used the portal 55 times between Aug. 2 and Aug. 24.

The department says they’re sending letters to the 18 residents whose information was accessed. That information includes pictures, names, addresses and dates of birth. Social Security numbers weren’t involved in the breach.

The state has disabled the faulty access site.

(© Copyright 2015 The Associated Press. All Rights Reserved. This material may not be published, broadcast, rewritten or redistributed.)