Security

The Windows Security Center was introduced with Windows XP Service Pack 2.
Security has been a hot topic with Windows for many years, and even Microsoft itself has been the victim of security breaches. Due in some part to the widespread usage of Windows on personal computers, as well as a number of technical reasons there is reportedly a fivefold greater amount of malware for Windows than other operating systems such as GNU/Linux, Unix, Mac OS X, and FreeBSD.[6]
Windows was originally designed for ease-of-use on a single-user PC without a network connection, and did not have security features built in from the outset[citation needed]. Windows NT and its successors are designed for security (including on a network) and multi-user PCs, but are not designed with Internet security in mind as much since, when they were first developed, Internet use was less prevalent. These design issues combined with flawed code (such as buffer overflows) and the popularity of Windows means that it is a frequent target of worm and virus writers. Furthermore, until Windows Server 2003 most versions of Windows NT were shipped with important security features disabled by default, and vulnerable (albeit useful) system services enabled by default. In June 2005, Bruce Schneier's Counterpane Internet Security reported that it had seen over 1,000 new viruses and worms in the previous six months.
Microsoft publicly admitted their ongoing security problems shortly after the turn of the century and now claims to regard security as their number one priority. Microsoft releases security patches through its Windows Update service approximately once a month (usually the second Tuesday of the month), although critical updates are made available at shorter intervals when necessary. In Windows 2000 (SP3 and later), Windows XP and Windows Server 2003, updates can be automatically downloaded and installed if the user selects to do so. As a result, Service Pack 2 for Windows XP, as well as Windows Server 2003, was installed by users more quickly than it otherwise might have been.