Whack-A-Rat

I have stopped counting the number of times I have played that game: Removing malware on a windows box without killing the system. The first step is identifying the malware. This is normally done by a virus scanner. If there is none avaliable, you might try some online scanner. If this is not possible or the scanner fails, […]

Botnet diet

It was a wonderful Xmas – not only from a PC resellers point of view. Old computers were exchanged and brand new preinfected preinstalled PCs were installed. As Windows XP now comes with at least SP2 and the mandatory firewall, those boxes are slightly more secure. A nice side effect is, that the new (unpatched) computers replaced the […]

SPF made easy

42 is one of the wrong answers if you are dealing with spam. SPF, which means Sender Policy Framework seems to be a better solution. SPF is a list of authorized mail sending hosts for your domain. But how does it work? The implementation takes place at your nameserver by adding a TXT entry to an existing domain. […]

Crack of dawn

The wafts of mist are about to clear and the cold of the night fades to morning. No, this is no horror film – it’s a start of a new work day. Xmas now is one of the events that passed by and the expected malware flood didn’t really come. But the attacks got more specific as there […]