$ZEC has jumped over 25% on June 15, extending a recovery that began after Zcash's development community moved swiftly to contain a serious security scare. The catalyst for today's move: a public confirmation from @Zooko that @AnthropicAI's restricted Mythos model completed a full audit of the Zcash protocol and found no additional critical vulnerabilities.

A Clean Bill of Health from Anthropic's Mythos

The audit was arranged by Shielded Labs in the wake of a critical flaw discovered in the Orchard shielded pool. The vulnerability, which had existed since May 2022, was uncovered using Anthropic's Claude Opus 4.8 AI and could have allowed undetectable counterfeit ZEC minting. Public disclosure triggered a roughly 50% price collapse in ZEC within 48 hours.

Anthropic's Mythos Preview is the company's most advanced AI model, introduced in April 2026 under its Project Glasswing defensive security initiative. Unlike publicly available Claude models, Mythos is restricted to a limited group of trusted partners, selected for its capabilities in autonomous security research and complex codebase analysis. At Shielded Labs' request, Mythos audited the Zcash protocol and, as of June 12, 2026, found no additional critical vulnerabilities after the Orchard fixes.

The confirmation came directly from Zooko Wilcox-O'Hearn, computer security specialist, cryptographer, and co-creator of Zcash. The clean audit result has given traders and developers fresh confidence in the protocol's security posture.

Ironwood Upgrade and the Road Ahead

The team is preparing the Ironwood upgrade, targeted for late July 2026, which proposes a new shielded pool using the corrected circuit and stricter turnstile accounting to allow independent verification of supply. The proposal is backed by formal verification, independent audits, and AI-assisted security review, a significantly more rigorous assurance framework than what underpinned the existing Orchard pool.

Security is a major focus before production, with the work including audits, fuzzing, AI-assisted review, extensive testing, and Lean-based formal verification. On the longer-term roadmap, Network Upgrade 7 is slated to implement Project Tachyon, targeting faster shielded transactions and quantum recoverability.

The broader picture is one of a protocol leaning into AI as both a security tool and a development accelerator. AI tools now catch protocol flaws that human reviewers missed for years, yet they also hand a sharper weapon to attackers who reach the code first and move faster than defenders. For Zcash, the Mythos audit result suggests the defensive side is currently winning.

Sources:
Anthropic's Secret AI Model Mythos Audits Entire Zcash Protocol, Finds No New Bugs – Bitcoin.com
Anthropic's Mythos Finds No New Critical Bugs in Zcash – GNCrypto News
Zcash Proposes Ironwood, A New Shielded Pool to Restore Supply Verification – The Merkle