Test Your MSP Incident Response Plan Before a Crisis

Define the MSP Systems the Plan Must Cover

List the systems your own business relies on to deliver service. Include your identity platform, management tooling, ticket records, documentation, communications, and recovery resources as applicable. Record which client responsibilities depend on them and who understands those dependencies.

Distinguish a client incident you help manage from an incident affecting your own ability to serve clients. The latter may involve shared tooling, privileged relationships, or access the team normally uses across accounts. Map the actual boundaries instead of treating every affected service as an unrelated ticket.

The model includes baseline security in every managed plan and favors fixing delivery before expanding. Apply the same scrutiny internally. A service your MSP sells still needs an owner, a tested procedure, and a response arrangement inside your own business.

Keep the Plan Reachable When Normal Tools Are Not

A plan accessible only through the identity system you're investigating is like a spare key left inside the locked house. Prepare an alternate way for authorized responders to reach the contact list and operating instructions. Test that route without relying on the usual workstation or login.

Dave MacKinnon asks how colleagues will obtain contact details and response plans when normal computers or corporate resources are unavailable. In his vendor preparation account, an exercise exposed a missing colleague contact list. I'd make that access test part of your own rehearsal.

Keep sensitive contact and response information controlled on the alternate route. Name who maintains it, who can use it, and how updates reach them. Include the response provider, insurer contact where relevant, key vendors, business decision-makers, and the people responsible for client communication.

Check the actual arrangements before an incident. Establish whom you call, how you authenticate the contact, which services are available under your agreements, and who can authorize the expense. A company name in the plan doesn't establish that someone will accept the engagement.

Separate Response Work From the Ordinary Queue

Name the responsibilities first, then assign people and backups. A small team may combine them initially, but the incident lead needs a way to hand work over as scope grows. Keep ordinary client support visible through someone who isn't also trying to direct every response action.

Nick and Jeni Clift distinguish incident leadership, communication, remediation, and keeping normal business operating in their practitioner advice. They emphasize protecting the lead from routine duties and allowing an external incident manager to direct delivery work. Confirm those working relationships with your response provider in advance.

Write Containment as an Authorized Decision

Specify who can approve containment and who can carry it out. Which systems to isolate depends on the observed threat, the affected scope, service dependencies, and the response team's assessment. Don't replace that decision with a universal instruction to power everything off.

Have the technical responder coordinate evidence preservation and record the actions taken. Keep observations, working explanations, timestamps, and results distinct. Identify who can collect or transfer incident material, where it will be held, and which expert support the team will use.

Test the authorization route when the owner or technical lead is unavailable. If containment could interrupt client service, make the decision authority and communication responsibility explicit. The on-call person needs a reachable route for that decision, rather than a list of people who haven't agreed to respond.

Albin Klinaku recommends a person's review of where an automatically remediated incident alert began and whether further action is needed. His practitioner suggestion separates automated response from understanding the event. I'd require the same follow-up when someone says the tool has already handled it.

Prepare the Client Update Before You Need It

Name the communication owner and alternate channels for staff and clients. Check whether you can use those channels when normal email or management tools are unavailable. Give the owner a route to obtain verified facts from the response lead without interrupting every technical task.

A starting message might be: "We are investigating an incident affecting the named service. The confirmed impact is recorded here. This is the action we need from you, if any, and this is when we will next update you." Fill each part from the current record; leave the cause under investigation when it is still unknown.

Keep required notifications separate from routine status updates. Have the responsible advisers assess the actual contracts, affected information, and applicable obligations. The plan should identify who obtains that advice and who sends an authorized notice, with the relevant contact routes ready.

Paul Green recommends planning client updates for a vendor supply-chain compromise, including a status page or phone message and someone to handle callers while technicians respond. His practitioner advice asks how that would work if the owner were unreachable. Use that absence as a specific exercise condition.

Set Conditions for Recovery and Return to Service

Record who decides a service can return and what evidence that decision needs. Include the access and configuration questions relevant to the event, the service checks, and the remaining risks. Keep any temporary arrangement and follow-up work visible after recovery.

Eric Anthony distinguishes restoring data from responding to an intruder. In his practitioner planning advice, he asks how the intruder will be removed and what they accessed. Bring those questions to the response provider rather than treating a restored file or working login as the whole resolution.

Update the environment and response records with what actually changed. Assign unresolved actions to named people and make the handoff explicit. A closed incident record should leave the next shift able to see the service state and the work still required.

Exercise the Decision You Need to Learn About

Choose a learning goal and a scenario from the dependencies you support. MacKinnon recommends establishing that goal and testing the MSP's own readiness before offering exercises to clients. I'd start with the team unable to reach the normal plan and the owner unavailable.

Walk through the contact chain, activation decision, containment authority, client update, and continuity of support. Record where someone needed information or permission they couldn't obtain. Schedule the fixes with owners and rerun the failed step before treating the plan as ready.