What Is Incident Response? Contrary to public perception, incident response is a process and not a one-off event. To make incident response successful, teams need to use a harmonized and organized strategy to approach any incident. Here are the five important steps of an effective incident response program: Preparation
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At the core of every incident response program that works, is preparation. Even the best people cannot effectively tackle an incident if there are no predetermined guidelines. A solid plan to support the team is a must. To address security events successfully, this plan must include four crucial elements, namely development and documentation of IR policies, guidelines for communication, cyber hunting exercises, and threat intelligence feeds.
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Detection and Reporting This phase is focused on monitoring security events to spot, warn, and report on probable 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 issuing alerts, analysts create an incident ticket, document preliminary findings, and set a preliminary initial incident category. * 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 have to be utilized for the collection of data from tools and systems for more extensive analysis, as well as to find indicators of compromise. People must have in-depth skills and a thorough understanding of digital forensics, live system responses, and memory and malware analysis. In collecting evidence, analysts have to concentrate on three core areas: a. Endpoint Analysis > Know the tracks left by 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 > Study existing systems and event log technologies to know the range of compromise. > Document all machines, accounts, etc. that may have been compromised for damage containment and neutralization. Containment and Neutralization This counts among the most critical steps of incident response. Containment and neutralization is based on the intelligence and compromise indicators found in the analysis stage. Normal operations can resume once the system has been restored and security has been verified. Post-Incident Activity More work must be done even after the incident is resolved. Any information that can help prevent similar issues in the future must be properly documented. This stage should be divided into the following: > completion of incident report to improve the incident response plan and prevent similar security incidents in the future > ponst-incident monitoring to stop the reappearance of the threat actors > updates of threat intelligence feeds > identifying measures for preventive maintenance > improving coordination across the organization for proper implementation of new security methods