Incident response quick sheet

When trouble hits, a calm checklist beats guessing. Use this quick sheet to decide who to call, what to isolate, and how to document. Print it and add your contact names and numbers so you can act fast.

Immediate actions

• Call your incident lead and a decision maker. Fast contact keeps choices clear and reduces delays.
• Alert IT support and your hosting provider. Early notice speeds technical help and containment.
• If you have a cyber insurance policy, call the hotline. Some policies require approved vendors to stay eligible.
• Isolate affected devices from the network without powering them down. This stops spread and preserves evidence.
• Start an incident log with date, time, person, action, and reason. Good notes support decisions and any reports.
• Collect basic indicators of compromise, called IOCs, such as new admin accounts or unknown services. Details guide cleanup.
• Change critical passwords from a clean device and turn on multi factor authentication. Strong accounts disrupt active attacks.
• Disable unused remote access and tighten firewall or web application firewall rules. Fewer open doors reduce new entries.
• Notify your bank or payment processor if money movement could be at risk. Quick holds can stop fraudulent transfers.
• If regulated data may be involved, contact your attorney or compliance advisor. Confirm legal duties before any public notice.

Next day actions

• Snapshot or image affected systems before changes. You may need these for forensics or insurance review.
• Check backups and test a restore in isolation. Restore only from a known good point.
• Apply security patches after evidence is captured. Closing known holes reduces repeat incidents.
• Rotate keys, tokens, and API credentials, and force log out all users. Fresh secrets cut off lingering access.
• Review access logs and alerts for unusual activity. Early detection of a return attempt limits damage.
• On my servers I can isolate a website and enable strict web application firewall rules while I investigate. You can mirror that approach on your stack.
• Prepare a short internal update and, if needed, a simple public holding statement. Clear communication reduces confusion.
• Write a brief timeline of contacts, decisions, and actions. A concise report helps your post incident review.

If you want help, I set up WAF & Firewall, handle Hosting & Infrastructure Plans, support HIPAA Compliance planning, and provide AppWT Analytics to watch traffic patterns.