Building an Incident Response Plan for Small Teams
You don't need a security team to have a plan. A simple, written incident response plan turns a chaotic security event into a manageable one.
Most organizations without a security team also don't have an incident response↗ plan, and that's exactly when a security incident does the most damage. It's not the technical severity of an incident that usually causes the biggest losses; it's the confusion, delay, and panic in the first hour.
What counts as an "incident"?
An incident is any event that threatens the confidentiality, integrity, or availability of your systems or data, a suspected malware↗ infection, a lost or stolen laptop, an employee falling for a phishing↗ email, unauthorized access to an account, or a service outage caused by an attack.
The four things every incident response plan needs
1. Who to contact, and in what order
Write down names and phone numbers, not just email addresses, since email may be part of the compromise. Include: the person responsible for IT/security decisions, your hosting or IT provider, and legal/insurance contacts if you handle sensitive data.
2. Containment steps for common scenarios
You don't need to predict every possible incident, just have a first step for the common ones:
- Suspected malware/ransomware↗: disconnect the affected device from the network immediately.
- Compromised account: change the password and revoke active sessions from another device.
- Lost or stolen device: remotely lock or wipe it if that capability is set up in advance.
3. What to preserve as evidence
Resist the urge to immediately "clean up" everything, take screenshots, note timestamps, and keep the affected system's logs where possible. This matters for insurance claims, understanding how the incident happened, and any legal reporting obligations.
4. A after-action review
Once resolved, write down what happened, how it was caught, what worked, and what to change, even a half-page summary. This is how a one-person team builds real security maturity over time without needing a dedicated analyst.
Practice the plan before you need it
A plan that only exists on paper often falls apart under real pressure. Once a year, walk through a realistic scenario with your team (or by yourself, if you're a solo operator) and ask: "if this happened right now, would I actually know what to do first?"
An incident response plan doesn't need to be sophisticated to work, it needs to exist, be written down, and be somewhere you can find it when you're stressed.