Big Brothers Big Sisters Listed by NightSpire Ransomware Group

On March 5, 2026, the nonprofit Big Brothers Big Sisters appeared on the leak site of the ransomware group Nightspire. The attackers posted samples of internal files that include students lists, background check records, and other internal documents. Anyone whose child has participated in the organization’s mentoring programs, or whose personal information was submitted for volunteer vetting, may have had data exposed.

Reported Details of the Breach

Public reporting indicates that Nightspire gained access to Big Brothers Big Sisters networks and exfiltrated internal files before encrypting systems. The data samples published on the group’s leak site contain lists of students, records used for background checks on volunteers and staff, and various internal documents. The exact number of individuals affected remains unknown. No evidence has surfaced that payment was made or that the full dataset has been released beyond the initial samples.

The incident follows the typical ransomware pattern of data theft followed by public shaming on a dedicated leak portal. Industry research from sources such as DoxxScan™ continuous monitoring indicates that nonprofit organizations have increasingly become targets because their security resources often lag behind those of large corporations.

Why This Matters for You and Your Family

If your child has ever been matched with a Big Brothers Big Sisters mentor, your family’s names, contact details, and possibly dates of birth or addresses could be in the stolen files. Background check records often contain Social Security numbers, driver’s license information, or previous addresses for parents or guardians who volunteered. Once this information reaches underground forums, it can be used for identity theft, loan fraud, or targeted phishing attacks against you or your relatives.