Microsoft Windows update classifications as defined in [1] https://support.microsoft.com/en-us/help/824684/description-of-the-standard-terminology-that-is-used-to-describe-micro
Constants
CLASSIFICATION_UNSPECIFIED
value: 0
Invalid. If classifications are included, they must be specified.
CRITICAL
value: 1
"A widely released fix for a specific problem that addresses a critical,
non-security-related bug." [1]
SECURITY
value: 2
"A widely released fix for a product-specific, security-related
vulnerability. Security vulnerabilities are rated by their severity. The
severity rating is indicated in the Microsoft security bulletin as
critical, important, moderate, or low." [1]
DEFINITION
value: 3
"A widely released and frequent software update that contains additions
to a product's definition database. Definition databases are often used
to detect objects that have specific attributes, such as malicious code,
phishing websites, or junk mail." [1]
DRIVER
value: 4
"Software that controls the input and output of a device." [1]
FEATURE_PACK
value: 5
"New product functionality that is first distributed outside the context
of a product release and that is typically included in the next full
product release." [1]
SERVICE_PACK
value: 6
"A tested, cumulative set of all hotfixes, security updates, critical
updates, and updates. Additionally, service packs may contain additional
fixes for problems that are found internally since the release of the
product. Service packs my also contain a limited number of
customer-requested design changes or features." [1]
TOOL
value: 7
"A utility or feature that helps complete a task or set of tasks." [1]
UPDATE_ROLLUP
value: 8
"A tested, cumulative set of hotfixes, security updates, critical
updates, and updates that are packaged together for easy deployment. A
rollup generally targets a specific area, such as security, or a
component of a product, such as Internet Information Services (IIS)." [1]
UPDATE
value: 9
"A widely released fix for a specific problem. An update addresses a
noncritical, non-security-related bug." [1]