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Kurt Seifried

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Linux Viruses: Overview
Viruses are, by definition, malicious pieces of code that replicate themselves. They can do this through a variety of methods, including “infecting” other executable files or spreading macros and other forms of executable content (e.g. JPEGs)....
Hiring Hackers: Why it Might Not Be Such a Good Idea
Kurt’s Closet Archive There has been a long, ongoing debate about this issue, and recently it has resurfaced in public. Should companies hire hackers convicted of computer crimes? The general theory is that these “hackers” are elite commando...
Firewalls: What To Block
Oddly enough, this is something many people don’t think about a whole lot. In some cases, you can simply deny everything and have a few specific allow rules, resulting in a pretty tight configuration. However, you will more likely have specific blocking...
Default Passwords and What You Can Do About Them
This is a rather large security issue that has been (until lately) largely ignored and swept under the carpet. Many vendors have a dirty little secret: they ship software and hardware with default usernames and passwords, some of which they do not tell...