Arrowhead Regional Computing Consortium (ARCC)

Arrowhead Regional Computing Consortium (ARCC)

Data Breach on April 11, 2023
Data Breach Report
Victimarcc.org
Threat ActorLockBit
Date DiscoveredApr 11, 2023
DescriptionArrowhead Regional Computing Consortium (ARCC) serve as a cooperative service agency to help school districts meet their data management needs in a cost-effective manner.
Leak SizeUnknown

Credential Exposure for arcc.org

We've indexed 10 @arcc.org accounts from external breaches, plus 2 credentials for arcc.org itself.

Last checked Aug 16, 2026

@arcc.org addresses from external breaches
Third-party breaches10 accounts · across 20 breaches · 9 with a plaintext password · most recent Nov 10, 2020
Combo lists4 accounts · most recent Jan 14, 2026
Passwords for arcc.org accounts
Combo lists2 logins · most recent Aug 1, 2026
Infostealer logs1 logins · 1 infected devices · most recent Jan 2, 2025

Logins may belong to customers or to staff, and the data doesn't say which. None of this is necessarily connected to the ransomware attack above.

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