Third-party security risks: what IAM teams need to control

TL;DR: Third-party security rises or falls on how well organisations control external access, monitor vendor behaviour, and enforce contract-backed security requirements, according to Zluri's analysis of vendor, operational, compliance, reputational, financial, and strategic risk. The real issue is not vendor count, but whether access, oversight, and offboarding are governed as one lifecycle.

NHIMG editorial — based on content published by Zluri: Security & Compliance 6 Strategies To Improve Third-Party Security

Questions worth separating out

Q: How should security teams govern third-party access across vendors and contractors?

A: Security teams should govern third-party access as a lifecycle, not a one-time approval.

Q: Why do third-party relationships create identity and access risk?

A: Third-party relationships create identity risk because external parties often receive real credentials or delegated access into sensitive systems.

Q: What do security teams get wrong about vendor due diligence?

A: Teams often treat due diligence as a paperwork exercise instead of an access control input.

Practitioner guidance

• Inventory every third-party identity Create a complete register of vendors, contractors, and integrations with explicit ownership, access scope, and business purpose.
• Bind contracts to security evidence Require security controls, compliance evidence, incident reporting duties, and audit rights before granting access.
• Automate offboarding across all access paths Remove vendor access when the task ends, the contract changes, or the relationship terminates.

What's in the full article

Zluri's full blog post covers the operational detail this post intentionally leaves for the source:

• A step-by-step third-party risk assessment workflow for vendor onboarding and review
• Detailed contract clauses for security obligations, incident reporting, and audit rights
• Practical examples of vendor access deprovisioning and renewal tracking
• Operational guidance on monitoring vendor activity and flagging unusual access patterns

👉 Read Zluri's analysis of third-party security strategies and vendor access risk →

Third-party security risks: what IAM teams need to control?

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