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Navy Engineer Charged With Espionage After Smuggling Secrets In Sandwiches, Band-Aids, And Gum Wrappers

Jonathan Toebbe traded an undercover FBI agent a memory card containing nuclear-sensitive government data hidden in a peanut butter sandwich for $10,000 in cryptocurrency, according to federal court documents.

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A Navy engineer and his wife are charged with espionage for selling classified nuclear data to a foreign government in exchange for a hundred thousand dollars in cryptocurrency. 

Jonathan Toebbe, 42, and Diana Toebbe, 45, were arrested for selling memory cards containing sensitive data on submarine reactors to an undercover FBI agent posing as an overseas diplomat.

The couple employed hyper-cautious measures to avoid detection, communicating with FBI agents using encrypted messaging platforms and used anti-surveillance techniques; they also stashed memory cards in peanut butter sandwiches, Band-Aid wrappers and packages of chewing gum at monitored drop locations scattered across the Northeastern U.S., according to a newly unsealed criminal complaint obtained by Oxygen.com

In April 2020, Jonathan Toebbe sent a letter to an undisclosed foreign country — listed in court documents only as “COUNTRY1” — to propose and “establish a covert relationship,” the FBI wrote in charging documents. The postmarked envelope, which was ultimately traced to a return address in Pittsburgh, allegedly contained Navy documents and an SD card containing three encryption keys with instructions on how to respond using an encrypted messaging platform.

As a Naval engineer, Jonathan Toebbe worked on the nuclear propulsion of submarines, as well as reactor plant testing. He'd also been assigned to an atomic laboratory outside Pittsburgh that focused on the design and development of nuclear power. A government employee since 2012, he held top secret security clearance through the U.S. Department of Defense as well as an active Q clearance from the Department of Energy.

In December 2020, officials for the unidentified nation turned over the envelope sent by Toebbe to U.S. authorities. Within days, the FBI launched a covert counter-intelligence operation — and began corresponding with the Naval officer.

“I apologize for this poor translation into your language,” Toebbe, who identified himself by the cryptographic pseudonym “Alice,” wrote undercover agents, according to the complaint. “Please forward this letter to your military intelligence agency. I believe this information will be of great value to your nation. This is not a hoax.”

On Dec. 26, the FBI began corresponding with Toebbe using ProtonMail, an end-to-end encrypted email service. 

“We received your letter,” agents wrote back. “We want to work with you.”

Toebbe ultimately demanded $100,000 USD via cryptocurrency for the military data to prove the supposed foreign official wasn’t an “unwelcome third party looking to make trouble,” the complaint alleged. 

“Please remember I am risking my life for your benefit and I have taken the first step,” the note cautioned.

Toebbe promised to upload the military documents to an encrypted cloud storage account and provide a download link once he received a monetary gift from the intelligence official. He reiterated the payout be made using Monero, blockchain-anonymous and privacy-oriented cryptocurrency.

On June 10, the FBI paid Toebbe roughly $10,000 USD in cryptocurrency to an address the Naval officer allegedly provided. 

Agents then set up a “dead drop” in Jefferson County, West Virginia, promising Toebbe an additional $20,000 “upon the sample verification and authenticity of the information" he provided.

On June 26, Toebbe was observed “servicing” the drop location, according to the criminal complaint. He was allegedly accompanied by his wife, Diana Toebbe, who acted as a lookout. FBI agents later recovered a blue 16 gigabyte SD card wrapped in plastic and “placed between two slices of bread on a half of a peanut butter sandwich" from the drop site.

Navy officials later informed the FBI that the envelope contained restricted U.S. government files, including a sample of drafted drawings of militarily sensitive design elements and operating parameters of special operation submarines.

Two days later, the FBI sent Toebbe an additional $20,000 in cryptocurrency.

On July 31, the couple hid a 32-gigabyte memory card in a Band-Aid wrapper in a resealable plastic bag, which they left at a separate drop location in south-central Pennsylvania.

In an encrypted message found on the memory card, Toebbe claimed he had thousands of more pages of such documents, which shedded light on “decades of U.S. Navy ‘lessons learned.'"

“This information was slowly and carefully collected over several years in the normal course of my job to avoid attracting attention and smuggled past security checkpoints a few pages at a time,” Toebbe wrote.

Toebbe demanded the remaining $70,000 owed — and proposed a $5 million payment plan for the additional documents he promised to deliver.

On Aug. 28, he hid a third SD card containing schematic designs for nuclear-powered cruise missile fast-attack stealth submarines inside a package of chewing gum at a third drop site in eastern Virginia.

Officials confirmed the illustrations pertained to the Navy’s Virginia-class submarines, which are utilized in mine warfare, as well as seek and destroy missions.

In his final correspondence with the FBI, Toebbe proposed continued data drops within an hour of Baltimore city limits. He described his growing paranoia — and a possible extraction of his family to a “safe third country.” 

“I have considered the possible need to leave on short notice,” Toebbe had written. “We have passports and cash set aside for this purpose. I pray such a drastic plan will never be needed.”

Toebbe, who referred to his FBI fixer as an “old friend,” concluded his encrypted note by expressing a whimsical desire to one-day meet the undercover agent in-person. 

“When it is safe, perhaps two old friends will have a chance to stumble into each other at a cafe, share a bottle of wine and laugh over stories of their shared exploits,” he wrote.

Jonathan and Diana Toebbe were subsequently charged with conspiracy to communicate restricted data and the communication of restricted data. The couple is currently in custody and being held without bond, officials said. They're expected to make an initial appearance in federal court in Martinsburg, West Virginia on Oct. 12. Attorney information wasn’t immediately available for them.

Officials, who refused to divulge the target country of Toebbe’s intended communication, were tight-lipped about the counterintelligence investigation this week.

Jarod J. Douglas, an Assistant U.S. Attorney in charge of prosecuting the case, declined to comment when contacted by Oxygen.com on Tuesday. A public information officer for the Navy also refrained from giving an official statement.

Some national security experts, however, suggested Toebbe possibly approached Russian or Chinese intelligence officials, who later tipped off the U.S government.

“For submarine warfare, the two targets are China probably first, and Russia second,” Mark Fallon, a former Deputy Assistant Director for the Naval Criminal Investigative Service (NCIS) told Oxygen.com. “It didn’t have to be a hostile country but if it was and they did take it, they might have thought it was an operation targeting them. It’s not an uncommon practice to send people into embassies offering to sell secrets."

Fallon, who coordinated several offensive counterintelligence operations over his 27-year career — and who himself was once stationed at a submarine base — reviewed the case’s sprawling complaint, calling it a “classic” example of a government “false flag” operation.

He drew parallels in the investigation to ‘Operation Lemon Aid,’ in which FBI agents infiltrated a Soviet spy ring targeting east coast Naval base operations in the seventies. Art Lindbert, a U.S. Navy commander, who was recruited as a double agent, communicated with Soviet intelligence agents through messages hidden in orange juice containers, cigarette cartons, soda cans, magnetic keyholders, and other household items.

“You need some concealment device — wrapping it in plastic in a peanut butter sandwich probably wasn’t a bad idea," Fallon added, referring to Toebbe. "It just didn’t work out.” 

If convicted, Jonathan and Diana Toebbe face a maximum punishment of life in prison.

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