Congressional Budget Office — Cyber Attacks, Breaches & Threat Activity

Threat entity extracted from intelligence sources

Frequency
20
occurrences
First Seen
November 6, 2025
Last Seen
January 8, 2026

The Congressional Budget Office (CBO) is the U.S.

Overview

The Congressional Budget Office (CBO) is the U.S. Congress's nonpartisan analytical office that provides budgetary and economic impact analyses. Its work handles sensitive data and government IT systems, making it a high-value target for cyber threats; recent incidents indicate it was hacked and is implementing new security controls, underscoring risks to the legislative process.

Related Threat Clusters

Recent Intelligence Reports

  • Chinese hackers targeted email systems of US congressional staff, people familiar say — Nextgov · January 8, 2026
  • CISA warns federal agencies to patch flawed Cisco firewalls amid ‘active exploitation’ across the US government — Techcrunch · November 13, 2025
  • Risky Bulletin: Another Chinese security firm has its data leaked — News.Risky.Biz · November 12, 2025
  • Congressional Budget Office hacked — Youtube · November 8, 2025
  • Congressional Budget Office implementing new security controls following cyberattack — Therecord.Media · November 7, 2025
  • Congressional Budget Office confirms it was hacked — Techcrunch · November 7, 2025
  • US Congressional Budget Office Hit By Suspected Foreign Cyberattack — Rss.Slashdot · November 7, 2025
  • Data breach at the Congressional Budget Office after Cyber Attack — Cybersecurity-Insiders · November 7, 2025

CVSS v3.1 Breakdown