If you need to contact me securely, you may send me an email that is encrypted with a PGP implementation. The fingerprint of my public key is located here:

pub   4096R/E80D8F7F 2008-01-17
      Key fingerprint = 95B3 4A1B B8BF E2F0 C230  B2BA 4E23 CAB8 E80D 8F7F
uid       [ultimate] Kees Leune <kees@leune.org>
uid       [ultimate] Kees (Cornelis Jan) Leune
uid       [ultimate] Kees Leune (Leune Consultancy, LLC) <kees@leune.com>
uid       [ultimate] Kees Leune (Information Security Officer, Adelphi University) <leune@adelphi.edu>
uid       [ultimate] [jpeg image of size 13166]
uid       [ultimate] Kees Leune (Professor, Adelphi University) <leune@adelphi.edu>

The key itself can be found on the PGP Key Servers.