E-mail | Encrypted e-mail | Alternative ways to contact us | Expired or revoked OpenPGP keys

E-mail

If you voluntarily send us an e-mail, you consent that our mail provider processes your personal data. Please read our privacy policy (the “Tutao GmbH” section).

Encrypted e-mail

If you know how to use GnuPG (or compatible implementations of OpenPGP), use our public OpenPGP key to encrypt the content of your e-mail. You don't need to sign your e-mails, so you don't have to create an OpenPGP key to communicate with us. If you want to get encrypted replies, please provide your public OpenPGP key or fingerprint. Have a look at our short guide to create a modern Curve25519 key.

The current fingerprint of our public OpenPGP key is:

valid fromvalid toFingerprint/Key ID
2019-08-292019-12-31F8CE AD90 8841 1EBE 722C 347A 3179 E817 703F 5D25

You can also use curl (or similar tools) to download our key:

  • curl https://infosec-handbook.eu/gpg.asc | gpg --import (direct download)
  • curl https://keybase.io/infosechandbook/pgp_keys.asc | gpg --import (Keybase mirror)

Alternative ways to contact us

If you don't want to send us an e-mail, you can use below-mentioned options to contact us. Kindly note that using these service providers is out-of-scope of our privacy policy. We may add or remove options over time.

If you send us messages via platforms that aren't listed on this page, there is no guarantee that we actually read your message.

Expired or revoked OpenPGP keys

To reduce risks of long-lived OpenPGP keys circulating on the internet, we regularly renew our key. The table below lists expired and revoked keys.

valid fromvalid toFingerprint/Key ID
2019-08-222019-10-31F6FB F3E9 9DC0 FD3E FE45 BEDC 6B68 98C3 32D1 70F7
2019-05-262019-08-24FE38 23F5 7A02 600E F080 9E58 BCF4 BFD9 4ABF F017
2019-03-032019-06-011C3D DFF7 2961 7BFC 7544 3E3B E545 30DB 4072 2A8A
2018-12-112019-03-114726 F48E 5607 B8A6 06CA F4F9 09D3 4CFA C102 617D
2018-09-252018-12-24ED21 9FFD 58F0 B467 223A 6312 D9FE 497B B424 11ED
2018-06-122018-09-10708C A4E3 8A9B E257 748D 01C9 172B AD3E 40AA EA08