Coast Guard and FBI Conduct Joint Boardings of Foreign Vessels Over Cybersecurity Concerns

The U.S. Coast Guard, in coordination with the Federal Bureau of Investigation, boarded two foreign-flagged commercial ships bound for American ports last month as part of a targeted effort to assess possible cyber threats.

According to a joint statement released Wednesday, the offshore inspections were conducted under a newly‑established protocol that allows the two agencies to act together when intelligence indicates a risk of cyber intrusion aboard vessels approaching U.S. waters.

Officials said the boardings were prompted by credible information suggesting that the ships might have been compromised by malicious software capable of disrupting navigation, communications or cargo handling systems. While the agencies declined to disclose the specific nature of the alerts, they emphasized that the actions were precautionary and aimed at preventing any potential impact on U.S. maritime infrastructure.

The operation reflects a broader shift in U.S. maritime security strategy, which increasingly treats cyber threats on the high seas as comparable to traditional physical hazards. In recent years, ransomware attacks on shipping firms and reports of hostile actors attempting to infiltrate shipboard networks have raised concerns among regulators and industry groups.

Both the Coast Guard and the FBI have expanded their cooperation in recent months, establishing joint offshore security teams that can board vessels, collect digital evidence, and work with foreign flag states to remediate vulnerabilities. The agencies noted that the recent boardings were conducted without incident and that the ships were allowed to continue to their destinations after the inspections were completed.

Maritime analysts say the move sends a clear message that the United States is willing to intervene early when cyber risks are identified, potentially deterring adversaries who might view commercial shipping as an easy target. They also caution that such measures must balance security with the efficient flow of global trade.

Looking ahead, the Coast Guard and FBI plan to refine their joint boarding procedures and to share findings with international partners. The agencies indicated that future boardings could become more routine as cyber threat intelligence evolves, reinforcing the United States' commitment to safeguarding its ports and supply chains from digital attacks.