An IT technician needs to create documentation for a recent security incident where sensitive customer data was potentially exposed. Which of the following steps ensures the BEST documentation of the incident that maintains data integrity and aids in future analysis and legal considerations?
Immediately informing all affected users about the incident.
Assigning a unique identification number to the incident for referencing in future discussions.
Categorizing the incident based on the severity level before any other action.
Using a clear chronological order with time stamps and descriptions of each action taken.