Day in the Life of an Incident Responder: Following the Evidence

Incident response doesn’t always start with a dramatic alert or a perfectly framed timeline. More often, it starts with uncertainty.

Something feels off. An executive notices unusual activity in their inbox. A user reports a login they don’t recognize. Suspicious emails have been sent. Data may or may not have been accessed. The facts are incomplete, the questions are piling up, and the pressure is already building.

By the time an incident responder gets involved, the organization is often navigating one of its most stressful moments. Leadership wants answers. Legal teams need clarity. Technical teams are working to contain risk while trying to understand the scope of what happened.

That’s where the real work begins.

The role of an incident responder isn’t just to investigate what happened; it's to bring clarity to uncertainty. Every log reviewed, every artifact analyzed, and every interview conducted helps piece together the story of the incident, so organizations can make informed decisions and move forward with confidence.

From emergency lines to incident lines: my journey into DFIR

When people ask how I got into incident response, they’re often surprised to learn it didn’t start in cybersecurity.

It started on the other end of a 911 call.

Before DFIR, I worked as a 911 dispatcher while studying criminal justice with the goal of becoming a police officer. What I discovered, though, was that the part of the job I loved most wasn’t being on the front lines; it was the investigation. I was drawn to gathering facts, piecing together incomplete information, identifying what mattered most, and helping people navigate some of their most stressful moments from behind the scenes.

Dispatching teaches you skills that stay with you for life. You learn how to listen carefully, ask the right questions, and stay calm when everyone around you is panicking. You learn to make decisions with limited information, prioritize competing demands, and adapt as situations change in real time. Most importantly, you learn that details matter.

Looking back, those skills were the perfect foundation for a career in Digital Forensics and Incident Response.

The first time I was exposed to DFIR, everything clicked. It combined the investigative mindset I loved with technology, problem-solving, and real-world impact. Whether you're working on a ransomware attack, a business email compromise, or an insider threat investigation, the core challenge is the same: understand what happened, determine what's most important, and help people through a high-pressure situation.

In many ways, incident response isn't all that different from dispatching. The environment is different, but the mission is the same. Someone is having a very bad day, and they're looking to you for answers.

Today, more than 8 years into my DFIR career, that mindset still guides every investigation. Stay calm. Follow the facts. Ask the right questions. And remember that behind every incident is a person or organization counting on you to help them through it.

The tools have changed. The mission hasn't.

The first hour sets the tone

No two days in incident response are exactly alike, but one thing is always true: the first hour sets the tone.

In incident response, information rarely arrives in a neat package. Clients are often dealing with uncertainty, leadership teams are looking for answers, and the facts are still developing. The first hour is about understanding what we know, identifying what we don't know, and building a plan to close those gaps as quickly as possible.

There’s a common misconception that digital forensics and incident response looks like a TV show: someone clicks a button, instantly identifies the attacker, recovers every deleted file, and closes the case before the next commercial break.

The reality is far less cinematic and much more methodical.

Real investigations are evidence-driven, time-bound, and often incomplete. Logs don't always tell a clean story. Telemetry expires. Attackers intentionally blur their tracks. The job isn't about flashy moments, it's about bringing clarity to chaos and helping organizations make informed decisions when the pressure is high.

What does that look like in practice?

Most mornings begin the same way: getting oriented. That means checking for overnight developments, reviewing active investigations, validating that log collections and forensic acquisitions were completed successfully, and processing any new evidence that arrived overnight. Priorities can shift quickly. New findings emerge. Scope expands. Business risk changes. Starting the day organized isn't just helpful; it's essential.

A strong start helps shape the entire investigation. The right questions, the right evidence, and the right priorities can make all the difference in helping a client move from uncertainty to clarity.

Once there's a clear understanding of timelines, deliverables, and case status, the investigative work begins.

A large portion of my work focuses on Microsoft 365, Exchange, and Google Workspace environments, where identity, email, and collaboration platforms sit at the center of daily business operations. Authentication activity, mailbox access, OAuth grants, and user behavior often provide some of the most valuable clues during an investigation.

Modern investigations extend beyond email as well. Collaboration platforms like Teams and Slack have become part of the investigative surface as attackers increasingly target the same tools employees rely on every day.

A significant part of DFIR involves connecting activity across multiple systems. Virtual machines, log analysis platforms, and yes, even spreadsheets play an important role in building timelines, correlating evidence, and turning raw telemetry into something meaningful.

One of the most important lessons I've learned is that context matters. Not every alert deserves the same level of attention. A suspicious login might be benign on its own, but when combined with abnormal mailbox access, OAuth abuse, or authentication changes, it tells a very different story.

And because evidence doesn't last forever, speed matters. Limited log retention, executive accounts, privileged access, and sensitive data all increase the urgency. Preserving evidence and establishing scope early can make the difference between a well-understood incident and unanswered questions months later.

The human side of high‑stress response

One of the biggest misconceptions about incident response is that it's all about technology. While technical analysis is certainly a major part of the job, the human element is just as important.

Incident response is inherently human. Clients are often navigating some of the most stressful moments their organizations have faced: business disruption, legal exposure, reputational risk, and pressure from leadership. Communication needs to be clear, calm, and actionable, even as findings evolve.

Clients are engaged throughout the investigation, from initial scoping calls and evidence collection to status updates and final findings discussions. Breach counsel is often involved as well, adding another layer of responsibility to ensure accuracy, clarity, and defensibility in every statement and deliverable.

Helping people understand what's happening and what needs to happen next is just as important as finding the evidence itself.

And most incidents rarely end once they're contained.

One of the most rewarding parts of DFIR is seeing organizations emerge from an incident stronger than before. Many clients initially engage us during a crisis and later return to focus on proactive improvements: strengthening identity controls, improving logging and retention, refining detection capabilities, or running tabletop exercises to prepare for future threats.

Those follow-on engagements are often the clearest indication that the investigation made a lasting impact. It's not just about recovery, it's about building resilience for whatever comes next.

So, what does an Incident Responder really do?

At its core, an incident responder investigates cyber incidents to understand how attackers gained access, what they did, and how organizations can recover and better protect themselves moving forward.

The work is challenging, fast-paced, and constantly evolving. Threat actors adapt. Techniques change. No two investigations are the same. But the mission remains consistent: helping organizations navigate uncertainty, make informed decisions, and emerge stronger than before.

What makes that possible is the people behind the response.

One of the defining aspects of incident response at LevelBlue is the depth of expertise across the organization. By bringing together talent and experience from teams and legacy organizations like Cybereason, Stroz Friedberg, Trustwave, and Alert Logic, every investigation benefits from a broad range of perspectives and real-world experience.

Collaboration across DFIR, threat intelligence, MDR, security operations, and legal response teams allows incidents to be viewed through multiple lenses at once; technical, operational, and business-focused. That collective knowledge helps ensure investigations are thorough, practical, and aligned with what matters most to the client.

For me, that's one of the most rewarding parts of the job. No matter how complex the incident is, you're never solving it alone. You're surrounded by talented people who are equally committed to helping clients through some of their most challenging moments.

And that's what makes the work worth doing.