haacked blog

http://haacked.com/

Null bytes to fool virus detection

http://blog.didierstevens.com/2007/10/23/a000n0000-0000o000l00d00-0i000e000-00t0r0000i0000c000k/

When I found a malicious script riddled with 0×00 bytes, SANS handler Bojan
Zdrnja explained to me that this was an old trick. When rendering an HTML
page, Internet Explorer will ignore all zero-bytes (bytes with value zero,
0×00). Malware authors use this to obscure their scripts. But this old
trick still packs a punch.

Virus Total

http://www.virustotal.com/
Virustotal is a service that analyzes suspicious files and facilitates the
quick detection of viruses, worms, trojans, and all kinds of malware
detected by antivirus engines.

Hash functions

http://burtleburtle.net/bob/hash/doobs.html

Code and analysis of different hash functions.

Hashes looked at: Additive, Rotating, One-at-a-Time, Bernstein, FNV,
Pearson, CRC, Generalized, Universal, Zobrist, Paul Hsieh's, My Hash,
lookup3.c, MD4

GIMP 2.4 preview

http://www.redhatmagazine.com/2007/10/23/gimp-24-preview/

by Nicu Buculei


Fedora 8 test releases have a surprise for all users interested in
graphics: a release candidate for the new GIMP 2.4, meaning the final
version will get the stable GIMP 2.41. This is exciting news, as the
previous major release, GIMP 2.2, is several years old, and a lot of new
features were added in the meantime.


In this article, we'll take a look at some of the most visible new
features, but beyond them, there are tons of less visible things: speedups,
a decrease in memory consumption, better importing and exporting, a better
print plugin, better EXIF support, changed scripting language for plugins,
zoomable preview for plugins, many bug fixes, and more.


If you'd like to see a more practical application of these tools, take a
look at my article on improving portraits with GIMP.


Note: You can click on any image in this article to see a larger version.

Fail2ban

http://www.fail2ban.org/wiki/index.php/Main_Page
Fail2ban scans log files like /var/log/pwdfail or /var/log/apache/error_log
and bans IP that makes too many password failures. It updates firewall
rules to reject the IP address.

Ohloh

Open source metrics and connecting people
http://www.ohloh.net/learn
Interesting site. Awesome design and pictures.