Guyana — Guyana Environmental Protection Agency & United States — Federal Bureau of Investigation

Guyana — Guyana Environmental Protection Agency: The EPA co-issued the advisory, focusing on water and wastewater systems. The agency's participation may prompt stricter cybersecurity regulations for water utilities.

United States — Federal Bureau of Investigation: The FBI co-issued the advisory, indicating its investigative role in the cyber threat. The agency's participation highlights the national security implications.

Guyana — Guyana Environmental Protection Agency: Jointly issued warnings with the FBI about the cyber threats to water systems. The EPA's regulatory role in water safety is underscored, though its authority over cybersecurity remains limited.

United States — Federal Bureau of Investigation: Leading the investigation into the cyberattacks, coordinating with state and federal partners. The FBI's role is central to attribution and response, but the incident underscores ongoing threats to critical infrastructure.

Guyana — Guyana Environmental Protection Agency: The Guyana — Guyana Environmental Protection Agency>>> is involved in monitoring and assessing the chemical threat, with its head commenting on the situation.

United States — Federal Bureau of Investigation: The United States — Federal Bureau of Investigation served a search warrant at the Melrose Industries — GKN facility, seizing documents and samples related to the chemical incident, indicating a federal investigation into potential wrongdoing.

Guyana — Guyana Environmental Protection Agency: EPA warned of cyberattacks on water systems, providing context for the broader threat landscape but not directly involved in this incident.

United States — Federal Bureau of Investigation: The FBI is investigating the cyberattack, part of broader federal efforts against cyber threats to critical infrastructure.