Senior members of the Trump administration’s National Security Council — including its top national security adviser, Michael Waltz — used Gmail to conduct government business, The Washington Post reported, citing documents and three unnamed government officials.

National security adviser and staff used personal Gmail accounts for official communications: report - Report on use of Gmail for government communications comes after national security adviser accide

The National Security Council (NSC) has provided clarification on reports about Mike Waltz and his staff using personal Gmail accounts for government communications.

Reports of 20 Signal chats and Waltz’s Gmail mark at least four major security liabilities uncovered since Signalgate.

The FBI and Department of Homeland Security are releasing reports on ransomeware attacks to better prepare private organizations.

According to three officials who spoke to the Washington Post, members of President Trump's National Security Council, including Waltz, have conducted government business over personal Gmail accounts.

Security specialists have expressed concerns that U.S. national security officials are not consistently using secure government systems like the Joint Worldwide Intelligence Communications System (JWICS). Personal email accounts are particularly vulnerable to cyber threats such as hacking and phishing.

Federal authorities have warned that inboxes are being targeted by ransomware called "Medusa" which can steal huge amounts of personal information.