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What Is Incident Response? Contrary to public perception, incident response is a process and not a one-off event. To be successful, incident response teams must take a synchronized and organized technique to handle any incident. Here are the five important steps of an effective incident response program: Preparation
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Preparation is the key most crucial ingredient of an incident response program that works. Even the best people cannot effectively tackle an incident if there are no predetermined guidelines. A solid plan should be there to support the team. To successfully address security events, this plan should include four elements: IR policy development and documentation, communication guidelines, threat intelligence feeds, and cyber hunting exercises.
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Detection and Reporting This part is concerned with monitoring security events for detecting, alerting and reporting foreseen security incidents. * To monitor of security events in the environment, the team can use firewalls, and set up data loss and intrusion prevention systems. * Potential security incident detection can be done through the correlation of alerts in a Security Information and Event Management (SIEM) system. * Before alerts are issued, analysts create an incident ticket, present initial findings, and lay down a preliminary incident classification. * When reporting, there must be room for regulatory reporting escalations. Triage and Analysis This is where most of the effort in correctly scoping and understanding the security incident occurs. Resources need to be utilized for data gathering from tools and systems for further examination, and also to identify compromise indicators. Team members must be very skilled and knowledgeable in live system responses and digital forensics, along with malware and memory analysis. In gathering evidence, analysts must focus on three vital areas: a. Endpoint Analysis > Determine the tracks of the threat actor > Obtain artifacts to create activity timeline > Conduct a forensic examination of a bit-for-bit copy of systems, and get RAM to parse through and spot key artifacts for determining what happened in a device b. Binary Analysis > Check into suspicious binaries or tools utilized by the attacker and document the abilities of those these programs. Enterprise Hunting > Scrutinize current systems and event log technologies to know the scope of compromise. > Document all machines, accounts, etc. that may have been compromised for damage containment and neutralization. Containment and Neutralization This is among the most crucial steps of incident response. The technique for containment and neutralization is anchored on the intelligence and indicators of compromise spotted during the analysis step. Following the restoration of the system and verification of security, normal operations may continue. Post-Incident Activity After the incident has been resolved, there is still more work to do. Any information that can be used to stop similar problems in the future, must be documented. This stage should be divided into the following: > completion of incident report for the improvement of the incident response plan and prevention of similar security problems in the future > ponst-incident monitoring to stop the reappearance of the threat actors > updates of threat intelligence feeds > identifying preventative measures> identifying preventative techniques > improving coordination across the organization for proper implementation of new security methods