Certificate expiry and digital trust: where are your controls failing?

TL;DR: Logitech’s macOS outage showed how an expired Developer ID certificate can disable software, update paths, and end-user workflows at once, illustrating the broader enterprise risk of manual certificate management and fractured ownership, according to Keyfactor. Certificate expiry is not a nuisance event; it is a machine identity governance failure that can turn routine maintenance into operational downtime.

NHIMG editorial — based on content published by Keyfactor: When a Mouse Stops Working, Digital Trust Has Already Failed

By the numbers:

• Certificate expiry is the leading cause of outages for 45% of organisations.

Questions worth separating out

Q: What breaks when certificate ownership is tracked manually?

A: Manual tracking breaks when ownership, expiry dates, and service dependencies live in spreadsheets or inboxes instead of a governed lifecycle system.

Q: Why do expired certificates cause more than a simple login failure?

A: Expired certificates can stop software from launching, block updates, disrupt APIs, and break signed trust chains that other systems depend on.

Q: How can security teams know whether certificate lifecycle control is working?

A: Look for complete inventory coverage, clear service ownership, automated renewal on critical certificates, and alerting that fires before expiry rather than after outage.

Practitioner guidance

• Inventory every certificate as a governed asset Maintain a continuously updated register of certificates, owners, expiry dates, business services, and renewal paths so no certificate relies on a single person’s memory.
• Assign durable renewal ownership Require named backup ownership for each certificate and tie renewal responsibility to a team or service, not to an individual calendar reminder.
• Automate renewal for high-impact certificates Use automation for certificates that protect software signing, customer-facing services, APIs, and device trust so expiry does not depend on manual intervention.

What's in the full article

Keyfactor's full article covers the operational detail this post intentionally leaves for the source:

• The full incident timeline for the Logitech certificate lapse and how the failure propagated across macOS applications and update mechanisms.
• The article's discussion of why manual certificate ownership breaks down across IT, security, and development teams.
• The wider argument for automation as the only scalable response to shorter certificate lifecycles and certificate sprawl.
• Keyfactor's commentary on the post-quantum transition and why reissuing certificates will require a full-scale identity migration.

👉 Read Keyfactor's analysis of the Logitech certificate lapse and digital trust failure →

Certificate expiry and digital trust: where are your controls failing?

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