There are quite a few ways of contacting me. The most reliable way to contact me is to send me an @ reply on twitter or send me an email.
For my press kit, visit my press page.
For press inquiries, email email@example.com.
For speaking inquiries Book Harper
If you need to securely contact me, your best bet is to DM me asking for my Signal number. If needed we can decide an appropriate way to compare fingerprints.
You can also send me an encrypted message using my PGP key or through keybase.