November 6, 2025


Congressional Budget Office Targeted in Cybersecurity Breach

The Congressional Budget Office (CBO), a fundamental component of the legislative branch known for its nonpartisan analysis of economic and budgetary issues, has confirmed experiencing a "security incident." This revelation, announced on Thursday, marks a concerning vulnerability within one of Congress's key agencies.

According to CBO spokesperson Caitlin Emma, the agency detected the breach promptly and took immediate steps to mitigate any potential damage. "Like other government agencies and private sector entities, CBO occasionally faces threats to its network and continually monitors to address those threats," Emma stated, emphasizing the routine nature of cyber threats in today's digital environment.

The nature of the incident, which was first brought to light by The Washington Post, suggests the involvement of a suspected foreign actor, although this has not been independently verified by other news outlets, including POLITICO. The specifics of the breach, including the data potentially accessed, remain under tight wraps as investigations are ongoing.

Following the breach, the Senate Rules Committee, which oversees the CBO, received a detailed briefing on the incident. Details from this briefing have been limited, with sources only speaking under the condition of anonymity due to the sensitivity of the information.

Responses from major cybersecurity agencies were still pending as of the latest updates. Both the Cybersecurity and Infrastructure Security Agency, the primary federal entity responsible for defending against cyber threats, and the FBI, have yet to release statements regarding their involvement or the scope of their investigations into the breach.

This incident highlights the ongoing risks faced by government entities amid increasing global cyber threats. It underscores the crucial need for robust cybersecurity measures and constant vigilance in protecting sensitive governmental data. As the CBO and other agencies continue to respond to this incident, the importance of national security and the protection of economic and budgetary information remains more pronounced than ever.