The Pentagon on Wednesday announced plans to tighten controls on classified information, Reuters reported.
The plans follow the recent leak of classified documents that saw an airman arrested in April and later indicted on accusations of posting classified documents on the messaging app Discord.
The 45-day review did not identify a single point of failure, but the Pentagon said policies, including those related to electronic devices in sensitive areas, were ambiguous and led to inconsistencies in implementing them.
The Pentagon said the new measures included the appointment of "Top Secret Control Officers," establishment of a new office for insider threats, and plans for electronic device detection systems in classified, secret and top-secret work areas.
Jack Teixeira, 21, was indicted last month on several counts of willful retention and transmission of classified information related to the national defense. He pleaded not guilty to the charges.
Teixeira was taken into custody by the FBI at his home in North Dighton, Massachusetts in April. A judge later ordered him to remain jailed as he awaits trial, saying that releasing Teixeira would pose a risk that he would attempt to flee the country or obstruct justice.
The leak of documents, posted largely on social media sites, was believed to be the most serious security breach since more than 700,000 documents, videos and diplomatic cables appeared on the WikiLeaks website in 2010.
One of the leaked top-secret documents contained a short paragraph about Israel and alleged involvement by Mossad officials in the protests against the government’s judicial overhaul.
Another top-secret document that was leaked contained a US intelligence analysis of Israeli policy regarding military aid to Ukraine and stressed that US pressure could drive Israel to deliver more military assistance to Kyiv.