David is an expert in the field of offensive network security, currently working as a security engineer conducting penetration tests for banks. David's background as a security researcher and a network security analyst offer him a unique perspective on offensive security. David's blog is a great place to see his research and opinions about the field.

resume

I am happily employed as a security engineer. If this situation were ever to change, my resume would be available here. If you are interested in my background, please feel free to call or e-mail me.

projects

I'm a huge fan of FreeBSD, but have plenty experience administrating, auditing and troubleshooting the whole BSD family (OpenBSD, NetBSD and FreeBSD) and various flavors of Linux (including Gentoo, Slackware, Debian, Red Hat/Fedora, Ubuntu, SuSe, and a few others).

Although this applies to any hobby, open source software is particularly attractive for giving back to the community. I have released several personal projects as open source software, which can be accessed below:

pwntheinter.net is my blog on offensive network security.

ipfrule is a perl script designed to allow even novice users to utilize the powerful ipf firewall by simplifying the sometimes confusing process of writing rules. The script will allow any options (in any order) and will write a custom rule to your ruleset based on the specified options. If your BSD box isn't running a firewall, you have no excuse!

I wrote a guide to help users new to FreeBSD master the powerful ipf firewall. Starting from scratch, the guide covers setting up ipf in rc.conf and writing your first ipf ruleset, utilizing stateful inspection functionality and blocking all but the bare network essentials.

Palimpsest Encryption is an end-to-end encryption tool. It uses one-time pads generated via java's SecureRandom method, which is a cryptographically secure pseudo-random number generator. The initial key is sent using a TLS packet, but it will eventually be upgraded to an AES exhcange. Assuming the initial setup packet is never broken, it would be impossible to determine any subsequent keys because the key mutates with each message.

NewsBot is an Internet Relay Chat bot that queries various RSS feeds (Slashdot, CNN, etc.) and spews the latest headlines to an IRC channel. I originally wrote an SMS bot to send text messages via *nix sendmail and modified that code to create the NewsBot. Although I prefer perl to python, it was a fun project.

contact

You can reach me via email at dave@darkcode.info.