Ghost Murmur Isn’t a Real Threat. Your Data Is.

Choose one: tech that can pinpoint your position in a crowded stadium (that’s Ghost Murmur), or a system that tells someone exactly where you are, what you’re doing, and what you’re thinking about any time of day or night (the real threat).

1.) The wrong answer — Ghost Murmur is a classified, but publicly discussed CIA tool that allegedly detects a human heartbeat from forty miles away, powered by AI-enhanced quantum magnetometry.

It was in the news this week, because it maybe, but probably did not have something to do with how a U.S. airman was rescued behind enemy lines in Iran. More likely: his beacon signal worked.

2.) The right answer is your data. Similar to Ghost Murmur, very few people know exactly how it works, but unlike the spook tech, we know it’s real, it’s totally legal, it’s already out there, and it knows more about you than any quantum magnetometry application the Pentagon may or may not have could ever pinpoint on a map.

Where you were last Tuesday. What you searched during a late-night doom scroll. And while you don’t remember what you searched, or what street you drove down last week, it might be the reason your insurance rate went up. 

The federal government buys this data. So does your landlord. So do many employers. Law enforcement, too. You’ve been findable and uncomfortably knowable for years — no quantum computing needed.

What Is Ghost Murmur?

On April 3rd, an F-15E Strike Eagle went down in southern Iran. One pilot was rescued quickly. The second, known publicly only by his callsign “Dude 44 Bravo,” evaded capture for 36 hours finally found in action movie territory, hiding out in a mountain crevice at an elevation of 7,000 feet where he was extracted by U.S. commandos.

By the following Tuesday, the New York Post reported that the CIA had deployed a device with a dumb name using vaguely described “long-range quantum magnetometry” to find signals of human heartbeats. It was called Ghost Murmur. The tech was of course amplified by artificial intelligence software that parsed the signals captured, isolating a single human heartbeat from the surrounding noise of a 40 mile tract of land. 

“It’s like hearing a voice in a stadium,” said someone in the article. “Except the stadium is a thousand square miles of desert.” 

Another simile came to mind for those of us who follow surveillance. The quote was like hearing a nitwit screaming through a megaphone. 

Developed, according to sources, by Lockheed Martin’s Skunk Works division (the division that brought us U-2 spy planed and the SR-71 Blackbird) Ghost Murmur allegedly uses sensors built around microscopic synthetic diamonds to extend detection range to distances previously considered impossible.

President Trump said the CIA spotted the airman from forty miles away. CIA Director John Ratcliffe said the airman was “still invisible to the enemy, but not to the CIA.”

We all know old people who swear this or that thing happened when it didn’t. When I’m feeling generous, it’s the sort of thing I ascribe to a lack of mental acuity. This news cycle was that. 

What Quantum Magnetometry Actually Does

To understand why the recent claims about Ghost Murmur strain credibility, it’s necessary to at least try to understand what quantum magnetometry actually is. Sorry. 

This is where having a podcast comes in handy. I spoke with Chad Orzel, Associate Professor of physics and astronomy at Union College and author of How to Teach Quantum Physics to Your Dog. 

He told me the underlying science is real, but the claimed application is not. Quantum magnetometers can detect a heartbeat. Clinical sensors are usually placed right up against your body, at a distance of centimeters. The problem is physics: every time you double the distance from the source, the magnetic signal drops by a factor of eight. Move a meter away and you’re in heroic-effort territory. At a kilometer, it’s essentially impossible. At forty miles, according to Orzel, “comically impossible.”

To find a heartbeat at that range, the wonder tool would have to contend not just with Earth’s magnetic field and noise from natural and human-made electric currents, but also with the heartbeats of every other living creature in the vicinity, literally whatever else is running around in that part of the world powered by a heart.

According to Orzel, even the most sophisticated AI signal processing can’t pull a legible signal out of that much noise, because the signal itself has become vanishingly small long before it reaches the sensor.

So what actually found that airman? If I were to bet on Polymarket, I’d go with Dude 44 Bravo’s Boeing-made combat survivor evader locator beacon. 

So why this prattle about quantum magnetometry and Ghost Murmur? Maybe it was a ruse to mess with the Iranians, a peacocking “of course we’re not going to tell you how we actually figured this out.”

The Surveillance That Should Actually Worry You

Ghost Murmur is a distraction. While the tech is genuinely interesting, there is a much more serious form of surveillance that is actually reshaping our lives that rarely makes news. It lives happily in a data broker’s server farm, totally legal, totally unclassified, and already for sale.

Enter my friend Benn Jordan, a technologist (yes, he’s also that Benn Jordan— musician/composer). Benn has spent years studying how data moves through systems in ways most people never see. 

He didn’t mince words: the breadcrumbs we leave online every day in the form of location history, search queries, browsing behavior, purchase patterns is all collected into a file about you that is more detailed, more actionable, and more dangerous than anything Ghost Murmur could theoretically produce. Did I mention “more concrete?” 

How’s this for real? Your file is sold all the time to insurance companies, banks, law enforcement, the IRS, the NSA and the FBI. It may already be shaping decisions about you that you don’t know are being made. A rate that went up for no apparent reason. An application that was denied. A knock on the door or an official-looking letter.

There’s no Lockheed Skunk Works branding on the server that holds your location history from last March. The surveillance that should keep you up at night looks like a terms of service agreement you clicked through years ago and never thought about again.

What You Can Do Right Now

You can’t opt out of heartbeat sensing quantum magnetometry technology, assuming it exists. You can do something about your data file.

Start with a LexisNexis consumer disclosure request. LexisNexis is one of the largest data brokers in the world, and under federal law you’re entitled to see what they have on you. Make sure your sitting down when you look at your file. 

From there, consider using a service like DeleteMe, which systematically removes your information from major data brokers and keeps it off as new data is scraped.

While Ghost Murmur may or may not be real, your data file definitely is currently changing your life. In the latest episode of What the Hack, I talked about all of this with Benn Jordan and Chad Orzel of Union College. Go listen, then go request your LexisNexis consumer disclosure report.​​​​​​​​​​​​​​​​

Learn More:

• See where your data is exposed with our free scan.
• Learn about data brokers and how they misuse your data.
• Discover more from What the Hack wherever you get your podcasts.