USC Breakthrough Could Help Scientists Spot Disease Clusters, Fraud Networks and More

Emilio Ferrara has spent nearly two decades thinking about a deceptively simple question: in a network of millions of people or cells or proteins, how do you find the clusters?

The problem, known as community detection, sounds intuitive. Draw a map of friendships, and clusters naturally emerge: tight knots of people who know each other, separated by thinner threads connecting them to the wider world. Do the same with gene expression data, or cryptocurrency transactions, or brain scans, and similar structures appear. The challenge is doing this at scale, with real-world data that is messy, massive , and rich with information beyond just who is connected to whom.

For years, the field was stuck. Algorithms that could handle millions of nodes tended to ignore everything except the raw structure of the network, discarding profile data, text, and behavioral…

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THE BHI TRUST PONZI SCHEME (SOUTH AFRICA)

Date: Ongoing updates through February 2026 Perpetrator: Craig Warriner (Principal), with alleged co-conspirators

Case Description: The BHI Trust scandal remains one of South Africa’s most devastating financial crimes, involving the loss of between R1.9 billion and R3 billion. Craig Warriner, the “genius trader” behind the trust, turned himself in during late 2023, but the legal and recovery battles reached a fever pitch in 2025 and 2026. Warriner operated the trust as a textbook Ponzi scheme, utilizing “Old Boy” networks and high-profile brokers to lure in pensioners and high-net-worth individuals with promises of 20% annual returns.

In early 2025, the National Prosecuting Authority (NPA) faced heavy criticism for “provisionally withdrawing” charges against alleged co-conspirators Michael Haldane and Sona Pillay. However, civil recovery efforts by joint trustees have continued into 2026, aiming to claw back hundreds of millions in “fictitious profits” from early investors to redistribute to those who lost everything. The case is a masterclass in the failure of fiduciary duty; the FSCA eventually banned several advisors for up to 30 years for peddling the unlicensed scheme despite clear red flags, such as the lack of a website, the absence of regulated financial reports, and a fee structure that was triple the industry average.

Link to Original: Moneyweb – BHI Trust Scandal Deep Dive