See our website for versions of Bitcoin Core that are currently supported with security updates: https://bitcoincore.org/en/lifecycle/#schedule
To report security issues send an email to security@bitcoincore.org (not for support).
The following keys may be used to communicate sensitive information to developers:
You can import a key by running the following command with that individual’s fingerprint: gpg --recv-keys "<fingerprint>" Ensure that you put quotes around fingerprints containing spaces.