These vulnerabilities are rated based on their severity, which is indicated in the Microsoft security bulletin as critical, important, moderate, or low. • Critical Updates: It is a broadly released fix for a specific problem addressing a critical, non-security-related bug. • SPs: It is a fully tested and cumulative set of hotfixes, security updates, critical updates, and, as well as, additional fixes for problems found internally since the release of the product. These SPs might also contain a limited number of customer-requested design changes or features. Most companies consider the first SP as the time when the operating system (OS) has matured enough to be used throughout the organization. Sometimes, Microsoft might offer the fix for a specific problem either in the form of a hotfix or a cumulative patch that you can install. A hotfix is a single, cumulative package that includes one or more files that are used to address a problem in a software product, such as a software