A security incident affecting BAE Systems’ infrastructure has taken the US federal bankruptcy courts’ Bankruptcy Noticing Center offline, stopping the generation and distribution of bankruptcy notices, according to SecurityWeek’s report.

The Administrative Office of the US Courts said access to the BNC systems, related websites and the National Creditor Registration Service is unavailable while BAE investigates and works to restore operations. The outage also prevents users of the courts’ electronic filing system from generating creditor mailing lists used to serve documents, BleepingComputer reported.

The disruption began after BAE notified the Administrative Office late on October 9. Courts have warned that paper and electronic notices issued through the center since then have not been delivered. Electronic filing notifications to registered attorneys, trustees and the US Trustee continue, and courts are still accepting filings and opening new cases.

BAE described the event as a security incident isolated to the BNC system and said it took immediate steps to address it while coordinating with the Administrative Office. Neither BAE nor the judiciary has disclosed the cause, confirmed that the incident was a cyberattack, or said whether data was compromised. No restoration date has been provided.