Bundling, social engineering, and browser exploits all rely on the user to initiate a connection to a site that hosts malware, but worms can infect a computer without any interaction from the user. Network worms spread by sending network communications across a network to exploit vulnerability in remote computers and install the worm. After it is installed, the worm continues looking for new computers to infect.
If the worm attacks a Windows Vista or Windows 7 computer, Windows offers four levels of protection:
• Windows Firewall blocks all incoming traffic that has not been explicitly permitted (plus a few exceptions for core networking functionality in the domain and private profiles). This feature blocks the majority of all current worm attacks.
• If the worm attacks an updated vulnerability in a Microsoft feature, Automatic Updates—which is enabled by default—might have already addressed the security vulnerability.
• If the worm exploits a vulnerability in a service that uses Windows Service Hardening and attempts to take an action that the service profile does not allow (such as saving a file or adding the worm to the startup group), Windows will block the worm.
• If the worm exploits a vulnerability in a user application, limited privileges enabled by UAC block system-wide configuration changes.
The original release of Windows XP lacked all of these levels of protection. With Windows XP Service Pack 2 (SP2), Windows Firewall and Automatic Updates are enabled, but the other levels of protection offered by Windows Vista and Windows 7 are unavailable.
Source of Information : Windows 7 Resource Kit 2009 Microsoft Press
One of the misconceptions about cloud storage is that it is only useful for storing files. This assumption comes from the popularity of file...
On today’s Internet, IPv4 has the following disadvantages: • Limited address space. The most visible and urgent problem with using IPv4 on ...
The following are the advantages of WAP: ● Implementation near to the Internet model; ● Most modern mobile telephone devices support WAP; ...
Many of the virus, adware, security, and crash problems with Windows occu when someone installs a driver of dubious origin. The driver suppo...