CFO Act agencies are those agencies designated in the CFO Act (with the addition of DHS and minus the Federal Emergency Management Agency). In practice, the CFO Act agencies are the 24 largest Federal agencies in terms of budget; the 23
civilian CFO Act agencies are the CFO Act agencies minus the Department of Defense.
US-CERT is a division within DHS charged with responding to major information security incidents
Citation formats
U.S. government agencies: number of cybersecurity incidents 2023, by attack vector
In the fiscal year 2023, the U.S. government encountered e-mail or phishing attacks. The majority of these attacks targeted CFO act agencies. Attacks that occurred due to a violation of an organization's acceptable usage by an authorized user, excluding mentioned categories, amounted to over * cases.
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US Office of Management and Budget. (June 7, 2024). Number of reported cyberattacks against the U.S. government in FY 2023, by attack vector and government agencies [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 15, 2026, from /statistics/697279/us-government-attacks-cyber-security-vector/
US Office of Management and Budget. "Number of reported cyberattacks against the U.S. government in FY 2023, by attack vector and government agencies." Chart. June 7, 2024. ÌÇÐÄÆƽâ°æ. Accessed July 15, 2026. /statistics/697279/us-government-attacks-cyber-security-vector/
US Office of Management and Budget. (2024). Number of reported cyberattacks against the U.S. government in FY 2023, by attack vector and government agencies. ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 15, 2026. /statistics/697279/us-government-attacks-cyber-security-vector/
US Office of Management and Budget. "Number of Reported Cyberattacks against The U.S. Government in Fy 2023, by Attack Vector and Government Agencies." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 7 Jun 2024, /statistics/697279/us-government-attacks-cyber-security-vector/
US Office of Management and Budget, Number of reported cyberattacks against the U.S. government in FY 2023, by attack vector and government agencies ÌÇÐÄÆƽâ°æ, /statistics/697279/us-government-attacks-cyber-security-vector/ (last visited July 15, 2026)
Number of reported cyberattacks against the U.S. government in FY 2023, by attack vector and government agencies [Graph], US Office of Management and Budget, June 7, 2024. [Online]. Available: /statistics/697279/us-government-attacks-cyber-security-vector/
