Finance & Banking
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Fraud Management & Cybercrime
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Fraud Risk Management
Telegram-Based Market Is Exploiting Gaps in US Tracking of Departed Visa Holders
A Russian-operated darknet marketplace is exploiting a major blind spot for U.S. financial institutions by trafficking in the identities of former legal immigrants who held visas and worked in the country but have since returned home.
See Also: New Attacks. Skyrocketing Costs. The True Cost of a Security Breach.
Russian-speaking group Karma Fullz has built a profitable criminal enterprise by selling highly convincing synthetic identities of former U.S. visa holders – complete with Social Security numbers, clean credit histories and tax records, according to a report released Thursday by fraud prevention firm SentiLink.
Created in September 2024, the Telegram-based market offers three tiers of identity packages, with aged ex-patriot identities priced at more than $1,000 because of their rich credit histories and higher success rates for fraudsters. Scammers are using the fake identities to open new bank accounts, apply for credit cards, claim fraudulent tax refunds and access public benefits, all under the guise of legitimate identities that appear active within U.S. systems.
“There are clear signals when these identities are reactivated after years of inactivity, but most institutions don’t know where to look or how to flag them,” said David Maimon, head of fraud insights at SentiLink and a professor at Georgia State University. “The fraud rings know that, and they are exploiting it.”
The Karma Fullz crime ring doesn’t just sell data. It builds synthetic legitimacy around it, Maimon said. The group offers Experian account setups, aged email addresses with U.S. financial traces and even public record registrations. These enhancements help bypass fraud-detection systems, making it easier for criminals to go undetected.
Identities belonging to former immigrants on foreign work visas from Ukraine, Lithuania and China have appeared in fraudulent credit applications as recently as July 2025, years after they left the United States. One victim’s data was used to open accounts with multiple financial institutions, resulting in thousands of dollars in losses, he said.
In this video interview with Information Security Media Group, Maimon also discussed:
- Why a one-size-fits-all fraud detection approach leaves institutions blind to ex-patriot identity exploitation;
- How tax preparation firms may unintentionally contribute to identity leaks;
- How targeted detection tools could flag patterns related to identity theft and fraud.
Maimon leads fraud insights at SentiLink and serves as a professor in criminal justice and criminology at Georgia State University, where he directs the Evidence-based Cybersecurity Research Group.

