Doing Security The Right Way
What Is Incident Response? 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. Below are the five main steps that make a reliable 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. There must be a strong plan 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. * To detect potential security incidents, the team should correlate alerts within an SIEM (Security Information and Event Management) solution. * Before issuing alerts, analysts create an incident ticket, document preliminary findings, and set a preliminary initial incident category. * A report must leave space 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. People must be knowledgeable and skilled in live memory and malware analysis, digital forensic and live system responses. As evidence is gathered, analysts must concentrate focus on three main areas: a. Endpoint Analysis > Know the tracks the threat actor may have left behind > Get artifacts necessary to the creation of a timeline of activities > Conduct a thorough analysis of a detailed copy of systems from a forensic perspective, and let RAM go through it and identify main artifacts to find out the events that happened on a device b. Binary Analysis > Look into malicious binaries or tools used by the attacker and document the capabilities of such 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 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. Normal operations can resume once the system has been restored and security has been verified. 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 > intelligence feed updates > identifying measures for preventive maintenance > enhancing coordination within the organization for effective implementation of new security approach