Stilgherrian is a freelance journalist, writer and broadcaster with more than a little hands-on experience in information security, usually based in Sydney, Australia.
He studied computing science and linguistics at the University of Adelaide and has been using the internet ever since it's been possible in Australia. He has hand-rolled his own firewall rulesets under Linux and advised commercial clients on improving their network security.
Yes, his name is just one word. No, it's not a pseudonym.
Stilgherrian is also a prolific user of Twitter. You can follow him at http://twitter.com/stilgherrian @stilgherrian -- but be warned. He uses bad language.