Isaca Updated CISM Exam Questions and Answers by ashton

The greatest concern resulting from the lack of severity criteria in incident classification is that escalation procedures will be ineffective because they rely on severity criteria to determine when and how to escalate an incident to higher levels of authority or responsibility, and what actions or resources are required for resolving an incident. Statistical reports will be incorrect is not a great concern because they do not affect the incident response process directly, but rather provide information or analysis for improvement or evaluation purposes. The service desk will be staffed incorrectly is not a great concern because it does not affect the incident response process directly, but rather affects the availability or efficiency of one of its components. Timely detection of attacks will be impossible is not a great concern because it does not depend on severity criteria, but rather on monitoring and alerting mechanisms. References: https://www.isaca.org/resources/isaca-journal/issues/2017/volume-5/incident-response-lessons-learned https://www.isaca.org/resources/isaca-journal/issues/2018/volume-3/incident-response-lessons-learned

The next thing an incident response team should do after establishing that an application has been breached is to isolate the impacted systems from the rest of the network, which means disconnecting them from the internet or other network connections to prevent further spread of the attack or data exfiltration. Isolating the impacted systems can help to contain the breach and limit its impact on the organization. The other options, such as maintaining the affected systems in a forensically acceptable state, conducting a risk assessment, or informing senior management, may be done later in the incident response process, after isolating the impacted systems. References:

https://www.crowdstrike.com/cybersecurity-101/incident-response/

https://learn.microsoft.com/en-us/security/operations/incident-response-playbooks

https://www.invicti.com/blog/web-security/incident-response-steps-web-application-security/

Security awareness training is the most effective way to ensure information security policies are understood, as it educates employees on the purpose, content and importance of the policies, and how to comply with them. (From CISM Review Manual 15th Edition)