Blockchain Transparency Poses Security Risks, Report Says

A new report from CoinRabbit and ChangeNOW pushes back against the idea that financial privacy and regulatory compliance are a zero-sum game. The report, presented by Decrypt, argues that the default transparency of public blockchains introduces real operational and physical risks for both corporate and individual users. Privacy tools can protect legitimate users without blocking law enforcement, the report says.

The transparency of public ledgers means anyone with an internet connection can track a wallet's full transaction history, counterparty connections, and balance. For companies, that creates unusual exposure. Citing Statista data, the report notes that 36% of corporate board members now see internal data leaks as their top operational threat, with average breach costs at $4.44 million. On a public blockchain, a competitor could watch a corporate wallet to infer profit margins, supplier terms, or payroll timing.

For individual investors, the problem is more immediate. Wallet balances act as a public net-worth registry. "Public blockchain transparency lets anyone audit your net worth in real time, turning private wealth into public information," said Walter Barrett, chief strategy and growth officer at CoinRabbit.

CoinRabbit's own survey found that nearly half of high-net-worth clients faced targeted social engineering over the past three years, directly linked to visible wallet balances.

CertiK recorded 52 verified physical extortion attacks, sometimes called "wrench attacks," in the first half of 2026 alone. Those attacks resulted in $124.1 million in stolen assets.