Kleins cause of death was pancreatic cancer.

Klein learned that the splitter system wasnt just in San Francisco.

But he said it was all for public safety as he was pursuing the bad guys of Al Qaeda.

Mark Klein in the 2007 PBS Frontline episode “Spying on the Home Front” (left) and door revealed to be an NSA spying room at AT&T in the mid-2000s.

Mark Klein in the 2007 PBS Frontline episode “Spying on the Home Front” (left) and door revealed to be an NSA spying room at AT&T in the mid-2000s.Screnshots: PBS

Kleins association with the EFF was vital for exposing what he knew.

And the group is clearly grateful for him stepping forward.

The first wasHepting v. AT&Tand the second wasJewel v. NSA.

Far-right conspiracy theorist Laura Loomer, photographed in April 2024.

He wrote an account of his experience calledWiring Up the Big Brother Machine .

Mark stood up and told the truth at great personal risk to himself and his family.

AT&T threatened to sue him, although it wisely decided not to do so.

U.S. billionaire Elon Musk with President Donald Trump on Marine One after landing on the South Lawn of the White House in Washington, DC, on March 9, 2025.

Snowden leaked classified NSA documents in 2013, but very few articles mentioned Kleins whistleblowing at the time.

NSA spying on vast quantities of internet traffic didnt start with the mid-2000s.

In fact, the U.S. intelligence agencies were there from the internets first baby steps.

Secretary of Defense Pete Hegseth signs a memorandum reversing the name of Fort Liberty back to Fort Bragg while flying in a C-17 operated by the 300th Airlift Squadron en route to Stuttgart, Germany, Feb. 10, 2025

They helped invent the damn thing.

Surveillance of the internet by the U.S. government is obviously a huge issue that remains relevant today.

Sure, the government is probably monitoring your internet traffic.

FBI Director Christopher Wray speaking at the Aspen Cyber conference on September 18, 2024.

News from the future, delivered to your present.

Just Like Hawk Tuah Girl, the NSA Is Getting Its Own Podcast

Heard anything good lately?

Screenshot from a promotional video for the new NSA podcast No Such Podcast.

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U.S. President Donald Trump speaks to the media during a guided tour of the John F. Kennedy Center for the Performing Arts before leading a board meeting on March 17, 2025 in Washington, DC.

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