ContextTimeStamp_decimal is the field that shows the system time of the event that triggered the sensor to send data to the cloud. In this case, it would be the time when the file was written. FileTimeStamp_decimal is the field that shows the last modified time of the file, which may not be the same as the time when the file was written. ProcessStartTime_decimal is the field that shows the start time of the process that performed the file write operation, which may not be the same as the time when the file was written. Timestamp is the field that shows the time when the sensor data was received by the cloud, which may not be the same as the time when the file was written.

Discovering internet-facing servers is an example of actor actions during the RECONNAISSANCE phase of the Cyber Kill Chain. The RECONNAISSANCE phase is where the adversary researches and identifies targets, vulnerabilities, and attack vectors. Discovering internet-facing servers is a way for the adversary to find potential entry points or weaknesses in the target network.

The rename command is used to rename fields while using transforming commands such as table, chart, and stats. It can be used after the transforming command and specify the old and new field names with the AS keyword. You can rename fields as it would not affect sub-queries and statistical analysis, as long as you use the correct field names in your queries. The renamed keyword and the desired name after the field name are not valid ways to rename fields.

Stacking (Frequency Analysis) is the best hunting method to use to find events that are outliers inside a network. Stacking involves grouping events by a common attribute and counting their frequency, then sorting them by ascending or descending order to identify rare or common events. This can help find anomalies or deviations from normal behavior that could indicate malicious activity. Time-based searching, machine learning, and searching are not specific hunting methods to find outliers.

This is the correct answer for the same reason as above. The Hunting and Investigation guide provides sample hunting queries, select walkthroughs, and best practices for hunting with Falcon. It does not provide a detailed tutorial on writing advanced queries, a detailed summary of event names and descriptions, or recommended platform configurations and prevention settings.