Responding to Third-Party Cyber Breaches

Responding to Third-Party Cyber Breaches

When a vendor is breached, you don’t control the investigation, the timeline, or what gets disclosed and when. But you still own the fallout: the regulatory notifications, the customer conversations, the contractual exposure. Most incident response plans stop at the organisation’s own perimeter. Few extend to a breach that happens on someone else’s system.

Without visibility into your third parties, you find out about a breach when your customers do, or when a regulator asks what you knew and when. Organisations that map their vendor relationships, before an incident are the ones that can act in hours rather than weeks. Visibility isn’t a compliance exercise. It’s what turns a third-party breach from a crisis into a managed response.

Join Ethixbase360 and S-RM for a practical session covering:

  • What changes when the breach is a vendor’s, not your own: what you can and can’t control, and where your obligations start regardless
  • What regulators expect you to have known and done before a vendor breach becomes your disclosure problem, and how to evidence it
  • The early decisions that determine how contained (or chaotic) the response becomes: who’s accountable, who’s informed, and in what order
  • Assessing exposure across a supplier’s downstream dependencies, not just the vendor in front of you
  • What to tell the board, customers and regulators when your own systems weren’t compromised but your data or operations were affected
  • How Ethixbase360 and S-RM support compliance, procurement and risk teams

Date: 1st September 2026

Time: 1pm-2pm BST

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