How to report zero-day vulnerabilities to the NSA, GCHQ and other national spy agencies so they can exploit them?

[cirosantilli]

Doesn't even need to be for money, just to help with national security.

https://www.quora.com/How-do-I-report-zero-day-vulnerabilities-to-the-NSA

The MI5 has a clear contact form: https://www.mi5.gov.uk/contact-us but they are internal matters only.

The MI6 also has one: https://www.sis.gov.uk/share-information-securely.html but they are mostly HUMINT, SIGINT is on the GCHQ.