Third Party Breach

Third Party Breach Tabletop Exercise

Third-Party Breach Event Simulation 

Documentation for facilitators including instructions, handbooks, feedback form, executive briefing templates, and lessons learned templates.

Revision Date: April 18, 2025

Our tabletop toolkit helps security leaders run effective incident simulations. These pre-built templates guide you through planning, facilitation, participant engagement, feedback collection, and post-exercise lessons learned analysis. Designed for both internal security teams and external security consultants, this material is ready-to-use for self-facilitated workshops or client-facing engagements

rdArguably one of the most important tabletop excercises your company will do - This simulation guides your team through responding when a trusted vendor or partner suffers a security incident that compromises your data or disrupts your operations. The exercise helps you assess your readiness to manage the unique challenges of third-party breaches, including rapid incident coordination, internal and external communications, and regulatory obligations. It includes practical checklists for reviewing contracts, engaging vendors, and documenting decisions so you can protect your business and maintain customer trust.

Whether admitted or not, nearly every company has critical reliance on third party supply-chain to do business. From manufactoring, to outsourcing, to CRM systems - most organizations have critical data stored offsite at third parties and/or have connectivity between companies. This creates significant risk, as we've seen in recent news (ie: SolarWinds, Springboot, etc.) and other recent security incidents that impacted global companies, infrastructure and even major cloud platform providers. In this tabletop exercise, we walk thru a scenario where a vendor or partner suffers an incident that impacts your data or impacts your operations.

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Tabletop Toolkit Materials (Sample set)


Resource Name File Type File Size Language
Introduction Letter .PDF 120 KB EN
Exercise Planner Handbook .DOCX 723 KB EN
Facilitator Guide & / Evaluator Handbook .DOCX 629 KB EN
Participant Invitation Letter Template .DOCX 87 KB EN
Participant Feedback Template .DOCX 253 KB EN
Exercise Briefing Slide Deck Template .PPTX 499 KB EN
Lessons Learned & After Action Report Template .DOCX 450 KB EN


How to Get Started