Visibility and control of digital certificates remains a challenge for even the largest enterprises, as evidenced by a high profile incident this week affecting Microsoft’s LinkedIn. Users accessing LinkedIn on Tuesday got a warning from their browsers alerting them about an insecure connection. The culprit: An expired TLS certificate.
In a statement to the press, LinkedIn said it experienced a “brief delay” in updating a digital certificate, and stated that member data wasn’t affected. Yet, the incident spotlights a nagging issue that frequently trips even the most technically savvy companies in the world: Digital certificate management.
Qualys SSL Labs’ SSL Pulse, which monitors the quality of SSL/TLS support across 150,000 of the most popular websites in the world, rated about 33% of the sites monitored as having inadequate security in its May report. A few thousand of these sites had expired certificates.