Hello, this is special agent Brian...

Posted by Jonas Elfström Sun, 04 Feb 2007 19:35:00 GMT

I've been interested in computer security for a long time. Maybe watching War games and coding Commodore 64 made an impact on me as a boy. A couple of years later the annoying boot sector viruses on the Amiga kept my interest going.

In late 1995 I was involved in starting up a local Internet Service Provider. Me and a friend (a colleague at our day job) were the technicians. Our server ran Slackware Linux. Fast forward to late 1996. My collegue was sitting in our "office" and happened to notice some strange processes and activity on our server. He pulled the network plug immidiately. We had been hacked!

A couple of days later we got an email from an investigator in the US Airforce. Not that I really thought that it wasn't real but I still wanted more confirmation, so I asked him to call me. I will always remember his opening line "Hello, this is Special Agent Brian...". He asked if he could get some excerpts from certain logs and as far as I remember we provided them to him. He also told us that people like those breaking in into our system usually are very good at removing traces of their visit in the logs. My friends gut feeling and fast network disconnect made us keep the logs.

All that said I'm not working as a computer security specialist. I've been working as DBA, sysop, teacher, software developer, project manager and systems integrator. I like to think of myself as a software engineer with some social skills. Also I might have a little more focus and feel for computer security than the next guy.

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Who's that girl?

Posted by Jonas Elfström Sat, 03 Feb 2007 17:56:00 GMT

So who's Alice? If you found this blog because of your interest in computer security it's a good chance that you already knew that in cryptography Alice, Bob and Mallory are often used as placeholders for common actors in different scenarios. I guess it's simpler to remember Alice and Bob than "The sender A wants to identify itself to receiver B" and alike. Alice usually wants to send data to Bob. If there exists an eavesdropper she is often called Eve. Mallory is a more dangerous animal than Eve because he has control over Alice's messages in such a way that he can change or resend then.

The first posting I had in mind for this blog involved Alice, Bob and Mallory and suddenly the blog had a name. That "article" isn't quite finished yet. Now it is.

This blog will most certainly not be about IT Security alone. I have been known to post some Ruby-snippets, JavaScripts and such in the past and will try to keep that up.

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