breachThe Nation-State Era (2010-2016) Daily Briefing Landmark Event

    Major Breach of US Congressional Budget Office Exposes Sensitive Data

    Monday, November 10, 2025

    On November 10, 2025, the cybersecurity landscape faced a significant incident with the breach of the US Congressional Budget Office (CBO). The attack, attributed to the Chinese APT group known as 'Silk Typhoon', potentially exposed sensitive internal communications and documents. This breach raises serious concerns regarding the integrity of congressional operations and the security of governmental data. The implications of such a compromise could be far-reaching, affecting legislative processes and public trust in governmental institutions. As investigations unfold, security professionals are urged to reassess their incident response protocols and strengthen defenses against state-sponsored threats. The CBO breach is a stark reminder of the persistent risks posed by sophisticated threat actors targeting critical infrastructure.

    For further details, visit Check Point Research.

    Sources

    CBO Silk Typhoon data breach APT government cybersecurity