Downloading Security Update for Windows XP (KB958644) 1.0 from our website was free. Security Update for Windows XP (KB958644) lies within System Utilities, more precisely System Optimization. Some of the software aliases include "Security Update for Windows XP KB958644".
The following version: 1.0 was the most frequently downloaded one by the program users. Commonly, this program's installer has the following filenames: actmovie.exe, client2.exe, msnsusii.exe, update.exe and wiaacmgr.exe etc. This free tool was originally developed by Microsoft.
From the developer:
A security issue that has been identified could allow an unauthenticated remote attacker to compromise the Windows-based system and gain control over it. Security Update for Windows XP (KB958644) address this problem. It can be installed on Windows XP Service Pack versions 2 and 3.
You may want to check out more software, such as Security Update for Windows XP KB954459, Security Update for Windows XP KB2727528 or Security Update for Windows XP KB2807986, which might be similar to Security Update for Windows XP (KB958644).
System Optimization
Personal Security