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Incident Response – The Five Steps Incident response is a process and not simply an isolated 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 incident response group cannot tackle an incident effectively when there are no preset guidelines. There must be a strong plan to support the team. 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 involves monitoring security events to detect as well issue warnings and report on security incidents in sight. * Monitoring of security events in the environment can be done with the use of firewalls, intrusion prevention systems, and data loss prevention measures. * Detection of potential security incidents is done by by correlating alerts within a Security Information and Event Management (SIEM) solution. * Prior to issuing alerts, analysts make an incident ticket, document their initial findings, and then designate an initial incident classification. * Reporting should include room for regulatory reporting escalations. Triage and Analysis This is where most efforts to properly scope and understand the security incident takes place. 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. As evidence is gathered, analysts must concentrate focus on three main areas: a. Endpoint Analysis > Determine the tracks of the threat actor > Get artifacts necessary to the creation of a timeline of activities > Conduct a forensic analysis of a detailed copy of systems, and have RAM scan through and point to key artifacts to know what transpired on 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 counts among the most critical 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 Even after the incident is resolved, more work must be done. All information useful in the prevention of similar problems in the future should be documented. This stage should be divided into the following: > incident report completion to enhance the incident response plan and avoid similar security issues 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 > enhancing coordination within the organization for effective implementation of new security approach