# Zcash Protocol Reviewed with Mythos **URL:** \ **Category:** General\ **Created:** [June 12, 2026, 10:45pm UTC](https://forum.zcashcommunity.com/t/zcash-protocol-reviewed-with-mythos/56183 "2026-06-12T22:45:27Z")\ **Posts on this page:** 16\ **Page:** 1
**Author:** ![aquietinvestor](https://sea2.discourse-cdn.com/zcash/user_avatar/forum.zcashcommunity.com/aquietinvestor/32/34528_2.png) [@aquietinvestor](https://forum.zcashcommunity.com/u/aquietinvestor)\ **Post date:** [June 12, 2026, 10:45pm UTC](https://forum.zcashcommunity.com/t/zcash-protocol-reviewed-with-mythos/56183/1 "2026-06-12T22:45:27Z")
Shielded Labs worked with Anthropic to review the Zcash protocol using Mythos and prompts provided by @earthrise. No serious vulnerabilities were identified. We’ll share more details about the review and its findings in a future post. > ---
**Author:** ![palmar](https://sea2.discourse-cdn.com/zcash/user_avatar/forum.zcashcommunity.com/palmar/32/44900_2.png) [@palmar](https://forum.zcashcommunity.com/u/palmar)\ **Post date:** [June 12, 2026, 11:09pm UTC](https://forum.zcashcommunity.com/t/zcash-protocol-reviewed-with-mythos/56183/3 "2026-06-12T23:09:54Z")
Congratulations! It’s great to see the effort the Zcash teams are making in security. You’re definitely at the forefront. We look forward to the report. ---
**Author:** ![emersonian](https://sea2.discourse-cdn.com/zcash/user_avatar/forum.zcashcommunity.com/emersonian/32/42565_2.png) [@emersonian](https://forum.zcashcommunity.com/u/emersonian)\ **Post date:** [June 13, 2026, 1:48am UTC](https://forum.zcashcommunity.com/t/zcash-protocol-reviewed-with-mythos/56183/4 "2026-06-13T01:48:59Z")
A great idea. And just in time 🤦‍♂️ > **[Statement on the US government directive to suspend access to Fable 5 and...](https://www.anthropic.com/news/fable-mythos-access)** > > The US government has issued an export control directive to suspend all access to Fable 5 and Mythos 5 by any foreign national, whether inside or outside the United States. ---
**Author:** ![zooko](https://sea2.discourse-cdn.com/zcash/user_avatar/forum.zcashcommunity.com/zooko/32/32232_2.png) [@zooko](https://forum.zcashcommunity.com/u/zooko)\ **Post date:** [June 13, 2026, 2:57am UTC](https://forum.zcashcommunity.com/t/zcash-protocol-reviewed-with-mythos/56183/5 "2026-06-13T02:57:30Z")
Yeah I guess we got in under the wire. ---
**Author:** ![dontbeevil](https://avatars.discourse-cdn.com/v4/letter/d/4491bb/32.png) [@dontbeevil](https://forum.zcashcommunity.com/u/dontbeevil)\ **Post date:** [June 13, 2026, 3:29am UTC](https://forum.zcashcommunity.com/t/zcash-protocol-reviewed-with-mythos/56183/6 "2026-06-13T03:29:49Z")
Huge kudos to the team! This is more important than anything for Zcash. Appreciate the forward looking and proactive work under taken by @zooko , @aquietinvestor and Shielded Labs. Thanks @earthrise for legendary work on Zcash security. ---
**Author:** ![ClearCypherLab](https://sea2.discourse-cdn.com/zcash/user_avatar/forum.zcashcommunity.com/clearcypherlab/32/45648_2.png) [@ClearCypherLab](https://forum.zcashcommunity.com/u/ClearCypherLab)\ **Post date:** [June 13, 2026, 9:26am UTC](https://forum.zcashcommunity.com/t/zcash-protocol-reviewed-with-mythos/56183/7 "2026-06-13T09:26:16Z")
Congratulations! Now Zcash is more and more trustworthy. ---
**Author:** ![bloxster](https://sea2.discourse-cdn.com/zcash/user_avatar/forum.zcashcommunity.com/bloxster/32/20512_2.png) [@bloxster](https://forum.zcashcommunity.com/u/bloxster)\ **Post date:** [June 13, 2026, 9:36am UTC](https://forum.zcashcommunity.com/t/zcash-protocol-reviewed-with-mythos/56183/8 "2026-06-13T09:36:07Z")
Well done guys, always one step ahead! ---
**Author:** ![Siegfried](https://sea2.discourse-cdn.com/zcash/user_avatar/forum.zcashcommunity.com/siegfried/32/43513_2.png) [@Siegfried](https://forum.zcashcommunity.com/u/Siegfried)\ **Post date:** [June 13, 2026, 9:51am UTC](https://forum.zcashcommunity.com/t/zcash-protocol-reviewed-with-mythos/56183/9 "2026-06-13T09:51:37Z")
Thanks to Shielded Labs, Anthropic, and @earthrise! The US government banning bits via export controls because they’re considered dual-use feels a lot like a return to the first crypto wars. 😅 Hopefully, `/securityscan`, `/securitydiffscan`, and `/deepsecurityscan` in Codex will remain available, because they are invaluable to me when building secure web services. ---
**Author:** ![Siegfried](https://sea2.discourse-cdn.com/zcash/user_avatar/forum.zcashcommunity.com/siegfried/32/43513_2.png) [@Siegfried](https://forum.zcashcommunity.com/u/Siegfried)\ **Post date:** [June 15, 2026, 12:50pm UTC](https://forum.zcashcommunity.com/t/zcash-protocol-reviewed-with-mythos/56183/10 "2026-06-15T12:50:25Z")
![this shirt is a munition](https://global.discourse-cdn.com/zcash/original/3X/2/e/2e99c82c3eb83e71a630009e84407d31e8baf2ba.jpeg) I found Katie Moussouris [blog post](https://www.lutasecurity.com/post/the-fable-5-export-controls-harm-us-cyber-defense) about the new export controls informative. She claims to be the only external expert who has read the paper that led to the ban. ---
**Author:** ![Siegfried](https://sea2.discourse-cdn.com/zcash/user_avatar/forum.zcashcommunity.com/siegfried/32/43513_2.png) [@Siegfried](https://forum.zcashcommunity.com/u/Siegfried)\ **Post date:** [July 22, 2026, 8:38am UTC](https://forum.zcashcommunity.com/t/zcash-protocol-reviewed-with-mythos/56183/11 "2026-07-22T08:38:49Z")
The future is now. This OpenAI [blog post](https://openai.com/index/hugging-face-model-evaluation-security-incident/) is the craziest thing I’ve read in a long time. ---
**Author:** ![zooko](https://sea2.discourse-cdn.com/zcash/user_avatar/forum.zcashcommunity.com/zooko/32/32232_2.png) [@zooko](https://forum.zcashcommunity.com/u/zooko)\ **Post date:** [July 22, 2026, 7:13pm UTC](https://forum.zcashcommunity.com/t/zcash-protocol-reviewed-with-mythos/56183/12 "2026-07-22T19:13:31Z")
Yeah!! (Post must be at least 10 characters.) ---
**Author:** ![Siegfried](https://sea2.discourse-cdn.com/zcash/user_avatar/forum.zcashcommunity.com/siegfried/32/43513_2.png) [@Siegfried](https://forum.zcashcommunity.com/u/Siegfried)\ **Post date:** [July 23, 2026, 1:26pm UTC](https://forum.zcashcommunity.com/t/zcash-protocol-reviewed-with-mythos/56183/13 "2026-07-23T13:26:13Z")
When I read Nick Bostrom’s _Superintelligence_ a decade ago, I thought the paperclip maximizer was the most ridiculous thought experiment. How could something so intelligent misunderstand the intended goal so completely? But this is basically that: an AI pursuing a narrow objective so relentlessly that it hacks its way out of the evaluation environment and into real infrastructure to get the answer. It is the equivalent of hacking GitHub to find tomorrow’s Wordle. Scary stuff, even assuming these systems are used only with good intentions. ---
**Author:** ![Siegfried](https://sea2.discourse-cdn.com/zcash/user_avatar/forum.zcashcommunity.com/siegfried/32/43513_2.png) [@Siegfried](https://forum.zcashcommunity.com/u/Siegfried)\ **Post date:** [July 23, 2026, 1:31pm UTC](https://forum.zcashcommunity.com/t/zcash-protocol-reviewed-with-mythos/56183/14 "2026-07-23T13:31:28Z")
Has anyone attempted to build an AI worm yet? 🙄 ---
**Author:** ![iamroot](https://avatars.discourse-cdn.com/v4/letter/i/a87d85/32.png) [@iamroot](https://forum.zcashcommunity.com/u/iamroot)\ **Post date:** [July 23, 2026, 3:51pm UTC](https://forum.zcashcommunity.com/t/zcash-protocol-reviewed-with-mythos/56183/15 "2026-07-23T15:51:25Z")
The 90s, right? ---
**Author:** ![Zebraman](https://sea2.discourse-cdn.com/zcash/user_avatar/forum.zcashcommunity.com/zebraman/32/43159_2.png) [@Zebraman](https://forum.zcashcommunity.com/u/Zebraman)\ **Post date:** [July 23, 2026, 3:53pm UTC](https://forum.zcashcommunity.com/t/zcash-protocol-reviewed-with-mythos/56183/16 "2026-07-23T15:53:43Z")
> [@Siegfried](#): > > When I read Nick Bostrom’s _Superintelligence_ a decade ago, I thought the paperclip maximizer was the most ridiculous thought experiment. Ah, so _that’s_ what that [game](https://www.decisionproblem.com/paperclips/) was based on. 😄 ---
**Author:** ![Siegfried](https://sea2.discourse-cdn.com/zcash/user_avatar/forum.zcashcommunity.com/siegfried/32/43513_2.png) [@Siegfried](https://forum.zcashcommunity.com/u/Siegfried)\ **Post date:** [August 8, 2026, 8:40am UTC](https://forum.zcashcommunity.com/t/zcash-protocol-reviewed-with-mythos/56183/17 "2026-08-08T08:40:42Z")
[![](https://global.discourse-cdn.com/zcash/original/3X/5/8/58ff93333c116594e76940a24bdedc012fa3d3d0.jpeg "Black Hat USA 2026: The 'Breaking' News: The OpenAI–Hugging Face Incident") ](https://www.youtube.com/watch?v=87DyyMV0kCY)