DHS Investigates Reported Intrusion Affecting HSIN and SharePoint System

Summary
DHS confirmed a cyber incident affecting HSIN and a SharePoint collaboration system, isolated affected systems, and launched an investigation. Classified networks show no indication of impact; the intrusion’s origin and any data theft remain unclear.
Key points
- DHS confirmed a recent cyber incident involving HSIN and a SharePoint collaboration system used by government and private-sector partners.
- Sources cited by Nextgov said the intrusion occurred between late May and early June and targeted HSIN servers and the SharePoint system.
- DHS isolated affected systems, began a forensic investigation, and said the system remains operational for partners.
- DHS reported no indication that classified networks were affected; the intrusion’s origin and whether documents were stolen remain unknown.
- HSIN previously exposed restricted data in 2023 after an access-permissions misconfiguration.
Article Details
- Victim Organization
- Department of Homeland Security (DHS)
- Incident Type
- Cyber intrusion compromising the Homeland Security Information Network (HSIN) and targeting a SharePoint collaboration system.
- Operational Impact
- DHS isolated the affected systems and conducted a forensic investigation and damage assessment. DHS reported no indication that classified networks were impacted and said HSIN remained operational for partners.
- Claim Status
- confirmed
Products
Homeland Security Information Network (HSIN)of Homeland Security is investigating a recent cyber incident that affected the Homeland Security Information Network (HSIN) and a SharePoint collaboration system used by government and private-sector partners.Microsoft SharePointa recent cyber incident that affected the Homeland Security Information Network (HSIN) and a SharePoint collaboration system used by government and private-sector partners.
