North Korean IT workers are paying Americans to help them get and keep remote jobs at U.S. companies, the FBI said in an updated FBI public service announcement. At the same time, the Justice Department announced charges, two arrests, and the seizure of about 187 computer devices linked to the scheme. The FBI said these workers use stolen identities, extort victims, and threaten physical violence to demand payments. North Korea's government receives an estimated 85 to 90 percent of the revenue they generate, money that helps fund its nuclear weapons and other military programs.

How North Korean IT Workers Use American Facilitators

According to the FBI, North Korean IT workers are hiring Americans for a growing list of tasks. These include appearing on camera, sitting for job interviews, verifying fake identities, lending social media or professional networking accounts, shipping packages, completing urinalysis tests or fingerprint submissions, and keeping work laptops online from their homes. [caption id="attachment_114769" align="aligncenter" width="600"] Image Source: FBI Cyber Division[/caption] The FBI said some workers deliberately target people under financial stress, looking for those more likely to follow instructions without questions if paid. Taking part in these activities is illegal. Home setups that host company laptops, known as laptop farms, have helped the workers hide their locations for years. The FBI said they now run more laptop farms with fewer laptops at each to avoid single points of failure. Some also land remote IT jobs and then subcontract the work to freelancers in Pakistan, India, Nigeria, or nearby countries for a fraction of the salary.

Extortion, Threats, and Identity Theft

Identity theft sits at the center of the scheme. Most names and addresses given to employers come from stolen identities, and workers often buy accounts from identity verification providers to check that stolen details will pass background checks. The FBI said that after being fired, some workers made death threats against former managers and their families to collect more money. Others threatened to leak sensitive corporate data unless paid large lump sums. Some hired U.S.-based facilitators to show up in person at victim companies to intimidate staff. The workers also target jobs requiring U.S. government security clearances, positions with cleared defense contractors, and active-duty U.S. military members to host laptops.

Justice Department Charges Linked to North Korean IT Workers

In Ohio, a four-count indictment charges a scheme that ran from 2019 to around July 2025. U.S. nationals Michael James Bostelle of Pennsylvania and Juan Cecilio Pena Carrillo of Texas were arrested. Ten China-based individuals were also charged, and two more defendants remain under seal. Prosecutors say the scheme affected more than 70 U.S. employers and generated about $3 million, believed to have gone to sanctioned DPRK-controlled entities. Victims included health care, communications, cyber support, retail, and manufacturing firms across Ohio, 16 other states, and the District of Columbia. Under Operation Lonestar Roundup, the FBI carried out searches and other actions at more than 40 Texas residences between Sept. 21 and Sept. 25. Agents seized about 187 laptops and KVM devices. Cybersecurity firm CrowdStrike tracks the group as "Famous Chollima. FBI Cyber Division Assistant Director Brett Leatherman said 14 individuals have been charged and called close coordination with the private sector central to the operation.

What Companies Should Know About North Korean IT Workers

The FBI said no single red flag reliably identifies North Korean IT workers. It recommends an "identity in depth" approach, using layered checks throughout employment. Warning signs include remote desktop tools such as AnyDesk and TeamViewer, KVM over IP devices like TinyPilot and PiKVM, unrelated software on work devices, and frequent changes in bank accounts or addresses. Using E-Verify, requiring a U.S. passport, and live identity checks can add friction, the FBI said, while relying only on name ban lists may block real applicants. Individuals who receive threats should call 911. Victims or anyone approached can contact a local FBI field office and file a complaint at www.ic3.gov. The State Department has offered rewards of up to $5 million for information that disrupts North Korea's illicit financial activities.

A North Korean cyber actor group known as WaterPlum, also referred to as "Contagious Interview," has infected at least 30,000 devices across more than 100 countries. The group has been stealing cryptocurrency from IT professionals worldwide. A joint advisory was issued on September 18, 2026, by Japan's National Police Agency and National Cybersecurity Office, the US FBI and Department of Defense Cyber Crime Center, Australia's Signals Directorate, and Germany's Federal Intelligence Service and Federal Office for the Protection of the Constitution.

How WaterPlum Hackers Operate

The agencies assess that WaterPlum actors and certain North Korean IT workers operate under the 313 General Bureau of the Munitions Industry Department, part of the Workers' Party of Korea's Central Committee. The group poses as prospective employers, targeting software developers and IT professionals by impersonating artificial intelligence, cryptocurrency, or non-fungible token companies, and by using recruiting services. During fake technical interviews, victims are instructed to download files to complete coding assignments or fix errors on video calls. These files carry malicious Node Package Manager packages embedded with BeaverTail malware, InvisibleFerret, OtterCookie, OtterCandy, or StoatWaffle. Once installed, the malware grants backdoor access, allowing Remote Access Trojans to maintain persistence while infostealers exfiltrate wallet credentials, browser passwords, clipboard data, keystrokes, and identification documents to command-and-control servers.

Scale of the Cryptocurrency Theft

Between December 2025 and July 2026, WaterPlum exfiltrated funds or credentials from over 7,000 cryptocurrency wallets, transferring 1.7 billion Japanese yen, equivalent to 10.71 million USD, to North Korea. Primary targets included web designers, engineers, and specialists in blockchain and Web3 technologies.

Role of Laptop Farms

The advisory also details how North Korean IT workers generate foreign currency through "laptop farms," locations, often an enabler's residence, where employment computers are remotely controlled by workers based in North Korea, China, Russia, and occasionally Africa or Southeast Asia. Enablers supply identification images, bank accounts, and internet connections, then forward payments to the workers after taking a cut. Japanese authorities dismantled a laptop farm for the first time domestically, uncovering evidence of several hundred million yen transferred abroad in cryptocurrency. A related case involved a suspected North Korean applicant at a Japanese cryptocurrency exchange in May 2025, who submitted a forged resume, accessed the recruitment portal via VPN, and displayed mismatched language skills during a video interview. The company declined to hire the applicant, and no damage occurred.

Warning Signs and Recommended Countermeasures

The agencies list red flags including refusal of in-person meetings, requests for cryptocurrency payment, background voices during calls, and repeated video freezes. Recommended defenses include avoiding execution of untrusted code outside a sandbox, treating VSCode projects with caution using "Restricted Mode," deploying Endpoint Detection and Response tools, and immediately disconnecting compromised devices from the internet. Victims are advised to assume wallet data has been exposed, create new wallets on separate devices, and perform full operating system resets.

International Cooperation Continues

The FBI stated it continues to prosecute US-based facilitators who assist North Korean IT workers, while Japanese and American authorities pledged ongoing cooperation to expose revenue-generation schemes benefiting the Kim regime. The advisory noted that WaterPlum and North Korean IT worker operations shared overlapping IP addresses across laptop farms, crowdsourcing platforms, and job applications, indicating coordinated infrastructure. Companies and individual IT professionals are urged to review the tactics outlined in the advisory and strengthen hiring verification processes to prevent further infiltration.