Library of Congress’s Congressional Research Service — Cyber Attacks, Breaches & Threat Activity

Threat entity extracted from intelligence sources

Frequency
1
occurrences
First Seen
November 6, 2025
Last Seen
November 6, 2025

The Congressional Research Service (CRS) is the nonpartisan research arm of the Library of Congress, providing policy analysis and reports to members of the U.S.

Overview

The Congressional Research Service (CRS) is the nonpartisan research arm of the Library of Congress, providing policy analysis and reports to members of the U.S. Congress. As part of the legislative branch’s research ecosystem, CRS handles sensitive information, making its networks a relevant focus for cybersecurity risk and incident response within federal government IT environments.

Related Threat Clusters

  • Congressional Budget Office Hacked, Suspected Foreign Involvement

    The Congressional Budget Office (CBO) confirmed it was hacked, potentially exposing sensitive government data. The agency has implemented new security measures and is investigating the incident, which may involve…

    8 articles · Updated November 7, 2025
  • Congressional Budget Office Hacked by Suspected Foreign Actor

    The Congressional Budget Office (CBO) confirmed on November 6, 2025, that it was hacked, potentially exposing sensitive government data. The breach is believed to be linked to a foreign actor, and the CBO has taken…

    20 articles · Updated November 11, 2025

Recent Intelligence Reports

  • CBO systems accessed in 'security incident' possibly tied to foreign hackers - Nextgov/FCW — Nextgov · November 6, 2025

CVSS v3.1 Breakdown