What information should be included in documentation following a security breach?

In the aftermath of a security breach, it is crucial to document essential details that can help in understanding the incident and improving future security measures. Recording the time and date of the attack provides a timeline that is critical for forensic analysis, enabling security teams to trace back the actions that led to the breach and identify the point of entry. Additionally, documenting the names of contacted employees helps in maintaining a clear channel of communication and accountability during the recovery process. This information can support investigations and ensure that all relevant personnel are informed and involved in the response.

While other options contain relevant information, they either focus on broader aspects or suggest preventive measures which might not be immediate outcomes following a breach. For instance, suggestions for a future response plan and overviews of security policies are more strategic and not typically essential to document on an immediate basis following a breach. Similarly, estimates of attack costs and applications used can be important, but they are more relevant for financial assessments and system impact analysis rather than immediate incident documentation. Finally, while outlining network resources involved and future recommendations is important, the primary focus right after a breach should be on capturing the immediate details of the incident itself, which is why documenting the time, date, and involved personnel takes precedence.