​3.6​ Reserved Properties

This section defines property names that are reserved for future use in revisions of this document. The property names defined in this section MUST NOT be used for the name of any Custom Property.

Properties that are currently reserved across all STIX Objects are:

confidence

severity

action

usernames

phone_numbers

addresses

first_seen_precision

last_seen_precision

valid_from_precision

valid_until_precision

In addition, the following object names are reserved:

incident

infrastructure