If you pay, you must say. The new US law on crypto will force companies to notify any ransomware within 24 hours after the payment.
This is where the new law should help because, until now, ransomware victims rarely report the extortion to government authorities or others.
“It absolutely will aid in analysis by blockchain forensic researchers,” Allan Liska, a senior intelligence analyst at Recorded Future, told Cointelegraph. “While ransomware groups often switch out wallets for each ransomware attack, that money eventually flows back to a single wallet. Blockchain researchers have gotten very good at connecting those dots.” They have been able to do this despite mixing and other tactics used by ransomware rings and their confederate money launderers, he added.
The challenge for forensic modelers here is that they are working with highly imbalanced, or skewed, data. The Columbia University researchers were able to draw upon 400 million Bitcoin transactions and close to 40 million Bitcoin addresses, but only 143 of these were confirmed ransomware addresses. In other words, the non-fraud transactions far outweighed the fraudulent transactions.
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