Question Defense

Check Linux Server For Rootkits, Check If CentOS Linux Server Is Compromised

alex — Thu, 09 Sep 2010 03:12:36 +0000

Yesterday I wrote an article about securing your /tmp and /var/tmp directories on a Linux server because I had found some files uploaded to the /tmp directory via the apache user. After locking down those directories I wanted to verify that there were no other issues on the server [...]
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Secure Secure /tmp And /var/tmp Directories On CentOS Linux

alex — Fri, 03 Sep 2010 19:20:03 +0000

A couple days ago a CentOS Linux server that I took over administration on had some mysterious files show up in the /tmp and /var/tmp directories. The files were placed in /tmp and /var/tmp by the apache user meaning there is some form of security hole in Apache, PHP, [...]
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Disable Geo Tagging on the HTC Evo

purehate — Thu, 02 Sep 2010 21:24:36 +0000

I recently learned that most common smart phones do something called geotagging. As people who regularly follow this site will know I have recently been doing a lot of work with a new HTC Evo so I was really interested in this. Geotagging, also called geocoding, is the process [...]
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iTunes Could Not Sync Calendars To The iPhone Because The Sync Server Failed

alex — Wed, 01 Sep 2010 18:43:14 +0000

I typically charge my iPhone using a USB cable that attaches to my computer but recently I have been using the wall charger because my computer wasn’t always close. After using the wall charger for a week or so without ever actually syncing my iPhone to iTunes on my [...]
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Hash Collisions: World’s First Triple Hash Collision In MySQL(64)

Rolf — Tue, 31 Aug 2010 19:00:00 +0000

In this article, I’ll try to explain as much as I can about hashes and collisions and my latest discovery of a triple hash collision while keeping things as simple as possible. What Is A Hash: It’s a cryptographic function, which takes some data as input, and generates a string, usually [...]
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