Cybercrime
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Fraud Management & Cybercrime
Funnull Technology Is Content Delivery Network for Criminals, Says US Treasury

The U.S. government sanctioned a Philippine firm it said is linked to a majority of known romance bait scam websites, sites powered by trafficked workers who deceive victims into funneling money into fake investments.
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The Department of the Treasury sanctioned Thursday Funnull Technology and Liu Lizhi, a Chinese national who officials said works as an administrator at the company. Treasury cut off the company from the U.S.-dominated international monetary system for acting as a content delivery network for scam platforms. Treasury said Funnull bought IP addresses in bulk from major cloud services companies and sold web design templates and algorithmically-generated domain names to scammers.
Domain generation algorithms allow organizations like Funnull to quickly generate large numbers of similar but unique domains for websites, allowing scammers to perpetuate scams across a cluster of sites that makes them resilient to takedown requests, often generated by the legitimate companies the domains masquerade as.
Lizhi oversaw domain assignment to different scammers. He also tracked the progress and performance of his employees through various spreadsheets and other documents, Treasury said.
The FBI published a list of domains controlled by Funnull. The bureau since January identified more than 332,000 domains linked to Funnull-controlled infrastructure. Authorities estimate Funnull infrastructure has resulted in losses of $200 million from U.S. scam victims, averaging $150,000 per individual. The figures likely downplay the real extent of theft since not every victim reports losses.
Romance bait scams – previously known as “pig butchering” – have flourished as crime bosses located in Southeast Asia, often belonging to Chinese crime syndicates, have forced hundreds of thousands of people into compounds where they use scripted come-ons to con victims through chat apps.
Scammers emotionally manipulate victims into buying fake cryptocurrency or investing into a fictitious company. They reward victims with supposed balance increases and gain trust by allowing small withdrawals. When a victim is unwilling or unable to pour more money into the scheme, it ends. Romance bait scams have been linked to a worldwide losses of $4.4 billion.
A public-private effort in July identified 230 romance bait victims and retrieved 33 million British pounds.
Security firm Silent Push in October found that nearly 40% of the network nodes used by Funnull were IP addresses belonging to Microsoft Azure and Amazon Web Services. Silent Push found fake trading apps and suspect gambling networks also operating through the firm.
The companies reacted by banning Funnull IP addresses, Silent Push found in January, but “the pace is unfortunately not fast enough to keep up with processes being used to acquire the IPs.”
Site operators earlier in 2024 branched into supply chain attacks by acquiring polyfill.io
, an open source JavaScript library. Mobile apps that that maintained Polyfill dependencies had users redirected to an online “Asian gambling site,” Silent Push wrote.
With reporting by Information Security Media Group’s David Perera in Northern Virginia.