Zcash (ZEC), the privacy-focused cryptocurrency, suffered a brutal sell-off over the past 24 hours, with its price plunging approximately 30% and wiping out close to $3 billion in market capitalization. The catalyst was the disclosure of a critical vulnerability found during a security review conducted by Anthropic AI, a prominent artificial intelligence research company.
The review revealed a counterfeit vulnerability at the protocol level that could theoretically allow an attacker to forge Zcash transactions. Crucially, the Zcash development team had already patched the flaw before the findings were made public, meaning the network itself was never actually at risk. Nonetheless, the market reacted sharply to the news, triggering panic selling and a steep decline in ZEC's price.
Despite the patch being in place, the episode underscores the sensitivity of privacy coin valuations to security narratives. ZEC is now trading near its recent lows as the market digests the fallout from the unexpected security headline.