Full announcement
Please see the disclosure announcement.
Update announcement
We have deployed detectors to learn more about the issue and still have no evidence of malicious exploitation.
We are working with our partners on the continued investigation and we will post another update tomorrow.
Initial announcement
We have identified a vulnerability in the Zcash client.
We have not seen any evidence of this vulnerability being exploited in the wild and the engineering team is currently investigating the issue.
We will post more information when available.