Optimizely Investigates Data Breach from Vishing Attack

Optimizely Investigates Data Breach from Vishing Attack

First seen 23 Feb 2026, 23:09 UTC •BleepingcomputerEsecurityplanetScworld •32.7

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ThreatCluster

Optimizely, a New York-based ad tech firm, has confirmed a data breach resulting from a voice phishing (vishing) attack. The incident compromised some of its systems, affecting an undisclosed number of customers, including major brands such as H&M and PayPal. The company has begun notifying affected customers about the breach.

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Timeline

2026-02-23
Optimizely confirms data breach after vishing attack
2026-02-23
Optimizely notifies customers about the breach

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