Canadian man pleads guilty to Snowflake hacks that led to 165 breaches
A Canadian national is facing decades in prison for his role in the hacking of data storage platform Snowflake. Connor Riley Moucka, 26, pleaded guilty to computer fraud, wire fraud, aggravated identity theft and a related conspiracy on Wednesday in a Washington state federal court. He will be sentenced on October 27 and faces up to 32 years behind bars.
Moucka and his co-conspirators used stolen login credentials to breach Snowflake and steal troves of information from at least 165 companies. The hackers walked away with billions of files from major corporations, including AT&T, Ticketmaster, Advance Auto Parts, one of the largest school districts in the U.S., Neiman Marcus, Santander, LendingTree and more.
The AT&T breach exposed logs of calls and texts belonging to more than 100 million customers. The Ticketmaster breach affected roughly 560 million users. Those numbers alone show the scale of what Moucka and his crew pulled off.
How the Snowflake hacks unfolded
Moucka, from Kitchener, Ontario, was arrested in November 2024 and extradited to the U.S. in July 2025. Prosecutors said the breaches happened between February and October 2024. During that window, the hackers stole banking records, financial information, Drug Enforcement Administration (DEA) registration numbers, driver’s license numbers, passport numbers, Social Security numbers and more.
The stolen data wasn’t just for show. The hackers tried to extort victim companies by threatening to publish the information online. The crew collected about $2.5 million in ransom payments. Court documents show Moucka even extorted at least one victim a second time.
“Moucka used the stolen data of a government officer and members of a then-former government officer’s immediate family in this re-extortion attempt,” prosecutors said.
That’s a chilling detail. It shows Moucka wasn’t just casting a wide net — he was targeting specific people with sensitive information.
Profit from stolen data
Beyond the ransom payments, Moucka earned another $495,000 by advertising some of the stolen data on cybercriminal forums like BreachForums and XSS.is. Court documents said victim companies suffered about $9.5 million in losses related to the breaches.
FBI Special Agent in Charge W. Mike Herrington didn’t hold back in his assessment of Moucka’s actions.
“Connor Moucka’s threats and re-extortion tactics were calculated and predatory, and his actions did real harm to his victims, be they companies targeted for theft and extortion or the millions of everyday people who are their customers,” Herrington said.
Snowflake’s response and the Mandiant investigation
After the breaches came to light, Snowflake hired Google’s Mandiant unit to investigate. Mandiant confirmed that Snowflake’s platform itself wasn’t compromised. The hackers, according to Mandiant, stole still-valid credentials dating back to 2020 and used those login details to access company accounts.
That’s a key point for anyone worried about cloud security. The breach wasn’t a flaw in Snowflake’s infrastructure — it was a credential problem. The hackers got their hands on old passwords that were still active, and that was enough.
The Turkey connection
Mandiant said at the time that the hackers behind the campaign are “based in North America, and collaborates with an additional member in Turkey.” At least one of the alleged Turkey-based hackers, John Erin Binns, was detained by Turkish authorities in 2024 after being indicted for his role in a previous hack of telecom T-Mobile.
Before his arrest, Moucka allegedly spoke to news outlet 404Media, telling them he expected to be arrested and had been destroying evidence in advance of his detainment. That detail paints a picture of someone who knew the net was closing in.
What this means for cybersecurity
The Snowflake hacks are a reminder that credential theft remains one of the most effective attack vectors. Companies can have the best security infrastructure in the world, but if old passwords are still floating around, they’re a liability.
For businesses, the takeaway is clear: regularly rotate credentials, enforce multi-factor authentication, and audit who has access to what. For individuals, the lesson is equally simple — if you’re reusing passwords across accounts, stop. The fallout from these breaches affects real people, not just corporations.
Moucka’s guilty plea is a significant step in holding cybercriminals accountable. But with 165 breaches and millions of victims, the damage is already done. Sentencing in October will determine how long he pays for it.