You can contact me by email using the address firstname.lastname@example.org, which is also linked in the left sidebar and at the bottom of all pages of this website.
By encrypted message
From my profile page on the Keybase online identity registry, you can encrypt a message so that I will be the only one able to read it; simply send me the result by email.
If you already use OpenPGP, you can also get my public key via Keybase or via your usual key server. This key’s fingerprint is:
F918 EF6C 9061 BAD6 6C84 0A8A B111 2808 C99D 8831