The bitcoin alert keys are disclosed in this blog post, followed by a description of the purpose of this information and its history. The bitcoin alert system has been completely retired. The network is not at risk and this warning may be safely ignored if you do not have an ancient node (running v0.12.x or older) using the deprecated bitcoin alert system or its public keys.…
Read more at bitcoin.org
Alert Key and Alert System Vulnerabilities Disclosure [bitcoin.org]
