The Environmental Protection Agency (EPA) Building in Washington, Thursday, Sept. 21, 2017. Employees at the Environmental Protection Agency are attending mandatory training sessions this week to reinforce their compliance with laws and rules against leaking classified or sensitive government information.(AP Photo/Pablo Martinez Monsivais)

The Environmental Protection Agency (EPA) Building in Washington, Thursday, Sept. 21, 2017. Employees at the Environmental Protection Agency are attending mandatory training sessions this week to reinforce their compliance with laws and rules against leaking classified or sensitive government information.(AP Photo/Pablo Martinez Monsivais)

WASHINGTON (AP) — Employees at the Environmental Protection Agency are attending mandatory training sessions this week to reinforce their compliance with laws and rules against leaking classified or sensitive government information.

It is part of a broader Trump administration order for anti-leaks training at all executive branch agencies. The Associated Press obtained training materials from the hourlong class.

Government employees who hold security clearances undergo background checks and extensive training in safeguarding classified information. Relatively few EPA employees deal with classified files, but the new training also reinforces requirements to keep “Controlled Unclassified Information” from unauthorized disclosure.

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The EPA occasionally creates, receives, handles and stores classified material because of its homeland security, emergency response and continuity missions. EPA employees also work closely with contractors and other federal agencies that more regularly handle classified information.

President Donald Trump has expressed anger repeated leaks of potentially embarrassing information to media organizations in recent months.

In a speech last month, Attorney General Jeff Sessions said those responsible for the “staggering number of leaks” coming out of the administration would be investigated and potentially prosecuted.

“We share the White House’s concern with the unlawful leaks throughout the government,” Justice Department spokesman Ian Prior said Wednesday.

EPA officials did not immediately respond to messages seeking comment Thursday.

A three-page fact sheet sent to EPA employees as part of the training warned that leaks of even unclassified information could have serious consequences to national security.

“Enemies of the United States are relentless in their pursuit of information which they can exploit to harm US interests,” the document said.

The document recounted past circumstances where government secrets had been spilled either through espionage, computer hacks or leaks to reporters.

The examples included the 1980s spying case involving CIA counter-intelligence officer Aldrich Ames on behalf of the Soviets and a 1972 leak to columnist Jack Anderson about spying on members of the Soviet Politburo, which he disclosed in The Washington Post.

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The sheet also cited the 2015 hack of computers at the Office of Personnel Management, a data breach that compromised the names, Social Security numbers, birthdates and home addresses and other sensitive personal information for 18 million people.

EPA staff was reminded of the whistleblower protections afforded to federal employees who expose wrongdoing. The training materials directed them to do so through proper channels for reporting fraud, waste and abuse, including the inspector general’s hotline.

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Associated Press reporters Seth Borenstein and Sadie Gurman in Washington, and Darlene Superville in New York contributed.

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Follow AP environmental writer Michael Biesecker at http://twitter.com/mbieseck

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