Crypto
Former Northland man sentenced for ‘cryptojacking’ scheme
ST. PAUL — A former Northland resident will repay more than $45,000 to his former employer for misusing their computer systems to mine cryptocurrency for personal gain.
Joshua Paul Armbrust, 45, was sentenced Tuesday by U.S. District Judge Jerry Blackwell to three years of probation following his
April guilty plea to a felony count of computer fraud.
Armbrust, according to court documents, continued to use the resources of Digital River, a Minnetonka-based global e-commerce and payment processing company, for more than a year after he resigned in February 2020.
Through the scheme known as “cryptojacking,” he took advantage of the now-defunct company’s computing power to obtain and liquidate $5,895 worth of Ethereum — while forcing Digital River to absorb $45,270 worth of web service fees.
“The defendant’s conduct strikes at the core of digital trust and security in the modern economy,” Assistant U.S. Attorney Bradley Endicott told the court. “Companies rely on former employees to act ethically, even after separation, and to respect corporate systems and data.
“Unauthorized access to corporate cloud infrastructure not only creates financial harm, as in this case, but also exposes sensitive systems to potential compromise and opens the door to more severe cyber threats.”
Armbrust was
living in Orr when he was indicted by a federal grand jury last November.
Records indicate he has since relocated to St. Paul and is working for an insurance company.
Endicott said the scheme came to light only because Digital River, which went out of business in January, conducted an internal investigation and discovered the unauthorized activity, which was then traced back to Armbrust’s IP address.
Defense attorney William Mauzy told the court Armbrust had been given a code to access Amazon Web Services, which hosted programs that Digital River was using to mine cryptocurrency.
After leaving the job, the defendant used that same code to build a program to generate cryptocurrency for himself — leveraging the services between 6 p.m. and 7 a.m. daily, and then transferring the Ethereum into a digital wallet he controlled.
Endicott said it was “not a momentary lapse in judgment” but a “calculated and covert misuse of enterprise-level computing resources for private enrichment.” It “resulted in real monetary losses, investigative costs and operational disruption to a private company.”
“The defendant is clearly a capable and technically skilled individual,” the prosecutor said. “But instead of using those talents for constructive and lawful purposes, he chose to exploit his former employer for personal gain. It is disappointing that someone with this ability used his skills to steal.”
Mauzy, though, noted the scheme occurred “during a time of extreme financial need and considerable emotional distress,” as Armbrust was caring for his mother, who was in deteriorating health and has since died.
The attorney said the evidence clearly shows his client was not a “malicious hacker” who set out to disable his former employer’s computer systems. He made no efforts to cover his tracks and has accepted responsibility for the financial losses.
“Armbrust’s conduct, while criminal, was an act of desperation and despair,” Mauzy wrote, “not a crime of greed.”
The probationary term was expected, as both sides jointly recommended it under the plea agreement. Armbrust has no prior criminal history.
The FBI handled the investigation.
Tom Olsen covers crime and courts and the 8th Congressional District for the Duluth News Tribune since 2013. He is a graduate of the University of Minnesota Duluth and a lifelong resident of the city. Readers can contact Olsen at 218-723-5333 or tolsen@duluthnews.com.
Crypto
Stablecoin Settlement Is Here, but Seamless Off-Chain Money Movement Is Not | PYMNTS.com
The stablecoin industry has spent years trying to prove one thing above all else: that blockchain-based money can move faster, cheaper and more efficiently than the financial infrastructure it hopes to replace.
Crypto
Certik Unveils ‘Anti-Virus for AI Agents’ as Skill Marketplaces Face Hidden Threats
Key Takeaways
- Certik launched a security platform to provide an “anti-virus” layer for agent ecosystems.
- Sector audits reveal high risks, but CertiK aims to protect marketplaces with 90.5% scanning precision.
- Finchip.ai is among platforms expanding integrations ahead of future consumer-facing scan updates.
The Security Challenge
Blockchain and AI security firm Certik, on May 27, unveiled a new security platform designed to evaluate risks in third-party artificial intelligence (AI) skills. Dubbed the “anti-virus for AI agents,” the release comes amid growing industry concern over the security of AI skill marketplaces.
Security researchers have warned that many of these skills are unvetted, can execute system-level actions and may contain hidden malicious behavior, creating a new software supply chain risk for the AI era. Security audits across the sector have identified risks ranging from credential harvesting and data exfiltration to fund-transfer manipulation and prompt-based override attacks.
Despite these concerns, AI skill marketplaces have expanded rapidly as agent ecosystems mature. However, unlike traditional app stores, most skills are sourced from public repositories with little or no review. Analysts say this creates opportunities for attackers to embed harmful instructions, trigger unauthorized data access or manipulate autonomous execution flows.
In a recent blog post, Certik said its skill scanner platform is designed specifically to evaluate risks that emerge during execution, including scenarios involving financial transactions or fund calls. The scanner produces a numerical score from 0 to 100, along with “pass,” “warn” or “fail” verdicts and categorized findings. According to the company, the system achieves up to 90.5% precision in identifying security risks.
“As AI agents become more deeply integrated into financial systems, enterprise workflows and everyday digital interactions, the security model around third-party skills becomes critically important,” said Ronghui Gu, Certik’s CEO and co-founder. “CertiK Skill Scanner was built to establish a standardized trust layer before execution, helping users and platforms identify hidden risks before sensitive data, assets or systems are exposed.”
Certik said AI skill marketplaces can integrate the scanner directly into publishing pipelines, automatically reviewing skills before they go live and displaying security verdicts to users. Enterprises can deploy the tool as part of internal compliance and risk-management workflows, while independent developers can use it to self-audit skills before publishing.
The company said future updates will allow everyday users to scan skills themselves before installation. The scanner has already been deployed in select Web3 AI agent infrastructure environments. Certik is also expanding integrations with additional platforms, including Finchip.ai.
“Trust is the prerequisite for any skill economy to function at scale,” said Gary Yang, incubation investor at Finchip.ai. “CertiK’s work on skill security verification is exactly what this ecosystem needs. It’s what makes Finchip’s mission of programmable skill ownership and distribution worth building.”
The launch follows Certik’s expansion into AI-focused security infrastructure. Earlier this year, the company introduced its AI Auditor initiative to address risks tied to autonomous systems and AI-driven execution environments.
“AI applications are moving toward increasingly autonomous execution, which creates a new category of security and trust challenges,” Gu said. “We believe security infrastructure for the AI era must function proactively, not reactively.”
Crypto
FBI Seizes Over $8 Billion In Cryptocurrency As Part Of The Largest Forfeiture In US Government History
The FBI seized over $8 billion in cryptocurrency, freed nearly 2,000 trafficked workers, and arrested nearly 300 people in a recent international operation.
As part of the operation, authorities shut down several “scam compounds” and crime organizations, including groups known as the Prince Group in Cambodia, Operation Sand Dollar in Dubai, and the Democratic Karen Benevolent Army in Myanmar.
“Scam compounds are modern-day criminal enterprises built to steal from Americans, launder money, and exploit trafficked workers,” FBI director Kash Patel wrote on X announcing the results of the operation.
Fox News reports that the U.S. The Democratic Karen Benevolent Army, an armed militia named after a region in Myanmar that is allegedly connected to the Chinese mob, faces sanctions imposed by the U.S. Treasury. The government has classified it as a transnational criminal organization.
Images from an operation in Thailand reveal that the FBI confiscated office supplies and thousands of smartphones.

The FBI in Dubai will extradite six of the 275 individuals they and local police detained there to the United States to face federal charges, according to the FBI. The authorities raided nine “scam compounds” in Dubai, each allegedly generating $6 million in fraud proceeds annually.
Cryptocurrency scams in the US reached a record high in 2025
In April, an FBI report revealed that cryptocurrency scams in the U.S. reached a record high in 2025, with reported losses of almost $11.4 billion. According to the FBI, cyber-enabled crimes defrauded Americans of almost $21 billion in 2025, with the costliest complaints involving cryptocurrency and artificial intelligence (AI).
“The FBI’s 2025 Internet Crime Complaint Report highlights the ever-evolving tactics of internet scammers,” the FBI’s Baltimore office wrote on X. “From fake social media profiles to voice cloning and AI-generated content, cyber criminals are evolving.”
The Internet Crime Complaint Center (IC3) received over one million complaints in 2025, up from 859,532 in 2024. The most common complaints were about investment schemes, extortion, and phishing/spoofing.
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