Lessons Learned About Security

What Is Incident Response? Incident response is a process and not simply an isolated event. To be successful, incident response teams must take a synchronized and organized technique to handle 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 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 part is concerned with monitoring security events for detecting, alerting and reporting foreseen security incidents. * 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. * 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 collecting evidence, analysts have to concentrate on three core areas: a. Endpoint Analysis > Know the tracks left by the threat actor > 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 > Check dubious binaries or tools the attacker used and document those programs’ functionalities. 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. Containment and neutralization is based on the intelligence and compromise indicators found in the analysis stage. After system restoration and security verification, normal operations can continue. Post-Incident Activity After the incident has been resolved, there is still more work to do. Any information that can help prevent similar issues in the future must be properly documented. This phase can be split into the following: > completion of incident report to improve the incident response plan and prevent similar security incidents in the future > post-incident monitoring to prevent threat actors’ reappearance > updates of threat intelligence feeds > identifying measures for preventive maintenance > improving coordination across the organization for proper implementation of new security methods