Introduction
Another day, another breach in the news. You’ve heard it before, but it merits repeating. If history is any indication, for every organization a security breach is no longer a question of “if,” but “when.” Unfortunately, this probably means your organization as well.
That’s why you need to have a rock-solid incident response (IR) plan ASAP. In this blog, we’ll provide you with the important information and actionable insight you need to begin implementing an incident response strategy for your organization or hone the one you have already in place. With it, you’ll be ready to deal with breaches today and—as new threats emerge—well into the future. In the process, details of the current incident response landscape as well as links to excellent additional resources will be provided. Let’s jump right in and get you ready for whatever hackers throw at your organization!
What is Incident Response?
Incident response (IR) is a strategic, well-thought-out process which a business can use to manage a security breach or cyberattack “real-time”, mitigate the aftermath with effective “damage control”, and get everything back up and running quickly. A well-defined incident response plan, often supplemented by detailed playbooks, provides a step-by-step roadmap for teams to follow, ensuring a coordinated and effective reaction to a security incident. Time is crucial during the event, so everything possible must be well documented and ready to be rolled out fast.
The standard incident response lifecycle, as defined by frameworks like NIST and SANS, typically includes four key phases:
- Preparation: This is the most crucial phase, before all heck breaks loose and focuses on building a robust foundation before an incident occurs. It involves creating a formal plan and policy, establishing a dedicated group (sometimes referred to as a “Computer Security Incident Response Team or just CSIRT”), acquiring necessary tools, and conducting regular training and tabletop exercises.
- Detection & Analysis: This phase involves identifying a potential incident and conducting an initial investigation to determine its scope, severity, and cause. The sooner detection can occur, the more effective at limiting the “blast radius” of compromised assets and data. Sometimes referred to as “crunch time”, this is where you separate a true security incident from a routine event.
- Containment, Eradication & Recovery: The goal here is to stop the attack from spreading, remove the threat, and restore affected systems and data to a secure, operational state.
- Post-Incident Activity (aka, Lessons Learned): After the incident is resolved, the team conducts a thorough review to understand what happened, how the response went, and what can be done to improve security and the incident response process for the future. This step can sometimes be given short shrift but is essential to honing responses for the next inevitable attack.
Top 3 Trends in Incident Response
- AI-Augmented Attacks and Defenses – Every response yields a counter-response. Often true in life and certainly true with all things AI. Hackers are escalating their attacks size and speed. Whether utilizing AI to generate more convincing phishing emails, automating vulnerability exploitation, and leveraging AI botnets, the gloves are off. That’s the bad news. The good guys within the targeted organizations are not sitting down on the job. They are racing to AI to exploit its value in their defenses. AI-driven security tools can analyze vast amounts of data in real time, detect subtle anomalies that human analysts might miss, and automate parts of the response process, accelerating detection and containment. This is rapidly turning into a tit-for-tat environment, where the parties exchange actions and reactions. The winner? Too early to tell, but the one who brings the best AI model holds the optimal post position.
- Focus on Cyber Resilience over Prevention – Seemingly forever, the prime directive of cybersecurity within the business world was prevention. Build a fortress to keep all threats out and you can then relax. However, with the relentless increase in attack sophistication, as mentioned above, the mindset is now one of grudging acceptance: Our cybersecurity defenses will be breached, so how do we live in this brave new world? One way is to shift the focus from prevention alone to cyber resilience, which emphasizes minimizing or quickly containing the impact of an incident and ensuring the business can quickly recover and continue operations.
- Rise of Business Disruption Attacks – Though the “old fashion “ransomware and data theft threat vectors remain common; a menacing new trend is attacking with the goal of intentionally disrupting business operations is becoming prevalent. These attacks go beyond simple data exfiltration and aim to cause significant operational downtime and reputational damage. According to a recent Palo Alto Networks report 2025 Unit 42 Global Incident Response Report1, 86% of the incidents responded to resulted in business disruption. This significantly raises the stakes and reinforces the criticality of robust incident response plans that prioritize operational continuity alongside data protection.
Key Takeaways
IT security teams must have a mindset of “when, not if” we are compromised, what will we do? This mentality is central to an effective, modern incident response strategy.
Outstanding Incident Response in Five Easy Steps
Quickly and effectively countering a hacker’s access to your organization demands a systematic, prioritized framework. Though not implemented with a snap of your fingers, the process of developing or strengthening an existing incident response plan need not be difficult. Here are five actions, in order of importance:
| Priority | Action | Things to Keep in Mind |
| 1 | Build an Incident Response Team (IRT) and Command Structure | Create a cross-functional team which must include non-security staff such as representatives from IT, legal, human resources, public relations, and business leadership. Each member has a unique role to play, from technical containment to legal reporting and everything in-between. Define clear roles and responsibilities. This is essential since once the incident has occurred things are going to get chaotic quickly. Note that a clear chain of command and leader is critical. Key roles include a security lead to manage the technical aspects as well as someone to focus on messaging, both within and outside the organization. |
| 2 | Develop and Document Your Incident Response Plan and Playbooks | You may already have done this or not, but regardless, three items are crucial: High-level plan – This is an overarching resource that documents and outlines the overall strategy and policy for incident response. May sound obvious but be sure to define what is an incident, who is part of the team, and a process overview. Playbooks – OK, once the high-level plan is done, you need to get VERY specific via detailed playbooks. A playbook is a step-by-step guide for responding to specific types of incidents (e.g., a ransomware attack, a phishing campaign, or a denial-of-service attack). This is a tactical checklist the team can follow under pressure so be sure it is highly prescriptive to reduce the probability key steps are missed Accessibility – All this effort is for naught if the plan and playbook are not accessible by all stockholders in both digital and hard copies. Why hard copies? Because worse case, your entire network may be compromised and hence unavailable during a major incident! |
| 3 | Develop Clear Channels of Communication | Perhaps surprising to some, but having ready, definitive strategy or lines of communication is nearly as important of actually eliminating the threat! There will be many players within and outside the organization (some of the potentially governmental or law enforcement) that will be keenly interested in the status of and steps underway to eliminate the condition. Internal Communication – Assess who must be informed, when they need awareness, and by what method in the context of the specific stage of the incident. Note, many employees and staff may be in the dark as to what is happening. Remember IT resources could be compromised so alternate, backup communication methods should be available. External Communication – Pre-draft statements for the public and media. Don’t forget to have a contact list for important external stakeholders, including law enforcement (FBI, CISA), legal counsel, and third-party forensic companies. |
| 4 | Make the Right Security Tool Investments | Without strategic investments in key tools, you will be flying blind and at the mercy of the hackers. Network visibility is critical. As mentioned above, you need to limit the “blast radius” with situational awareness into the network, endpoints, and cloud as all or a subset may be at risk or infected. The following solutions are key to this objective: SIEM (Security Information and Event Management) – A SIEM collects and analyzes log data from various sources to identify suspicious activity and generate alerts. EDR (Endpoint Detection and Response) – EDR tools monitor endpoint activity and can automatically contain threats by isolating a compromised device. Network traffic analysis – Solutions that monitor network traffic can help you identify command-and-control (C&C) activity and other signs of compromise. It’s all about limiting threat movement, either east-west or north-south. Check out this and this blog for more information on these and other tools that can aid here. Also, don’t forget about ensuring you have the staff in place. These tools, including those that are AI-enabled, are not substitute for human expertise. |
| 5 | Rinse and Repeat (Your Plan) | Incident response must be constantly front and center as part of the organization’s cybersecurity initiatives. This should manifest in at least three tangible ways: Tabletop exercises – Simulate a realistic cyberattack scenario and walk through your incident response plan and playbooks. Be sure to include all key individuals. How did the various parts and people perform? Was there miscommunication? Answering these and similar question helps to identify gaps and hone skills for the “real thing”. Live-fire simulations – For larger organizations or advanced teams, a live-fire exercise involves a simulated attack on a test environment to practice technical response procedures. Incredibly valuable but sometimes out of the reach of smaller entities. Post-incident reviews – After every real or simulated incident, conduct a “lessons learned” meeting. This is a crucial step to identify what worked, what didn’t, and how to update your plan and playbooks. |
Assessing the Impact of a Hack
Not all security events are created equal. It’s important to keep that in mind, otherwise you’ll be run ragged with breaches that are minor. Gauging the seriousness of a hack is crucial for prioritizing your response and allocating resources. The most widely used method is scoring based on factors like the Common Vulnerability Scoring System (CVSS). However, this can be greatly simplified by focusing on three key factors and related questions that can quickly help assess the situation:
- Impact – How bad is the damage? There are three variables to consider here:
- Confidentiality – Was sensitive data like PII, intellectual property, or financial data accessed or stolen? This is almost always a high-severity event.
- Integrity – Was data modified or corrupted? For example, was a website defaced (marginally serious, depending on how it was modified), or were financial records altered (high severity)?
- Availability – Is the system or service down? A full-scale DoS attack on a critical service is a high-impact event.
- In the context of a system, a single compromised workstation with no sensitive data is a low-impact event while a server containing customer credit card data that is exfiltrated is a high-impact event.
- In the context of a system, a single compromised workstation with no sensitive data is a low-impact event while a server containing customer credit card data that is exfiltrated is a high-impact event.
- Scope – How widespread is the problem?
- Is it a single device or a handful of systems? (low scope)
- Is it an entire network segment, or a major application that multiple business units rely on? (high scope)
- The network edge presents a unique challenge here. A compromise at the edge, like a vulnerable firewall or a cloud-based web application, can have a massive scope, potentially affecting the entire organization and its customers.
- Attacker Sophistication and Intent – Who is behind the attack?
- Script kiddie – An opportunistic, unsophisticated attacker. These are often low-priority events unless they manage to stumble upon a critical vulnerability.
- Criminal gang – These attackers are financially motivated and often use well-established tools and tactics. These are usually significant threats.
- Nation-state actor – Should always be considered an immediate high-priority incident. The most sophisticated and persistent threat. Their goal is often espionage or sabotage.
Summary
And there you have it. The most important aspects of building or improving an existing incident response plan. It begins, as with most things, by clearly defining the problem—in this case a successful breach by a hacker. Understanding current trends provides a great lay of the land of the environment for which you are dealing. A succinct set of activities (“Outstanding Incident Response in Only Five Steps”) provides an actionable framework on which to proceed. Next up knowing whether a hack is a “Defcon 1 or 5” is critical step in both an incident response plan and playbooks. Tools like CyberScope® that can provide unique visibility at the edge network where many incidents originate.
Additional Resources
- NIST SP 800-61, Rev. 2, “Computer Security Incident Handling Guide” – This is a foundational and comprehensive guide from the National Institute of Standards and Technology and must a must-read for anyone building an incident response program.
- SANS Institute, “The Incident Handler’s Handbook“- The SANS Institute provides excellent, practical guidance on the six phases of incident response. Their training and whitepapers are a great resource for hands-on knowledge.
- 2025 Data Breach Investigations Report | Verizon – Provides invaluable statistics and real-world examples of data breaches, offering insights into attacker motivations and common attack vectors. It’s an excellent resource for understanding the threat landscape.
1 Palo Alto Networks, “2025 Unit 42 Global Incident Response Report.”
