As part of an ongoing effort to secure the PACER service and CM/ECF systems, the Administrative Office of the U.S. Courts (AO) will begin enforcing updated PACER and CM/ECF password standards in August. 

Please see the announcement on the PACER website which details the impending changes.

https://pacer.uscourts.gov/announcements/2025/06/27/additional-security-enhancements-coming-soon