Raymond is one of the founders of SURBL, the system used by many mailbox providers to identify spammy websites in email messages.

Raymond is also the owner of e-Hawk, a system implemented by companies like the CM Group, Mailchimp and ConstantContact to help identify bad actors attempting to create access accounts on their systems.

 Raymond Dijkxhoorn, a security expert and entrepreneur who has spent much of his career making life harder for cybercrooks and spammers.

- Brian Krebs, krebsonsecurity.com