To equip Windows operating systems with the latest updates and security patches even without a network connection, WSUS offline update CDs/DVDs are available. For this purpose, unplug the network cable from your network card! After the installation the operating system should be updated offline and thus without any connection to the intranet/internet. Remove the network connection prior to installing your pc. Updating new installations of the operating systems Windows XP/2003/Vista/2008(R2)/7 via network is not recommended and should therefore not be performed. In fact, we observed in Kiel University campus network that it is very common that the duration between a reistallation and an infect is only a few minutes. Those systems should be updated prior to connecting them to the network, because even within the short amount of time, in which the updates are being installed, it is possible for malware to infect the pc. Especially in the case of newly installed pcs this is generally not possible. Even through possibly installed anti virus software this often can't be prevented!ĭue to this, operating system updates should be installed immediately after publication. If a bugs turns out to be a security gap, often within only a few days malware is developed, which has the purpose of using the security gap to infect pcs, on which the relevant update was not performed. In case of a critical or a security-related error, the corrected code is normally provided quickly with an update or a patch, which can be downloaded with an existing internet connection and can finally be installed. According to this, bug of Windows operating systems or office packages are fixed by Microsoft. Normally, the bugs are fixed very soon after occurrence by the producer. However, they are often detected well after the release. Security gaps after/in spite of reinstallion Their main purpose is securely updating a new installed operating system. On the WSUS-Offline-Update-CDs/DVDs are current service packs and security updates for Windows operating systems and Office packages of Microsoft.