Breaches and incidentsBriefReported by a reputable outlet, citing the company
Optimizely: vishing gives attackers CRM and back-office documents
Optimizely notified customers that attackers took basic business contact information from certain internal business systems, CRM records and a limited set...
- Disclosed
What happened
- Optimizely notified customers that attackers took basic business contact information from certain internal business systems, CRM records and a limited set of back-office documents; it says the intruder “was unable to escalate privileges, install software, or create any backdoors.” Count not disclosed (about 10,000 business customers total).
- Root cause: voice phishing of staff.
- Optimizely describes a “loosely affiliated group”; BleepingComputer suggests ShinyHunters.
- Customers notified.
Sources
- https://www.bleepingcomputer.com/news/security/ad-tech-firm-optimizely-confirms-data-breach-after-vishing-attack/
- https://www.cm-alliance.com/cybersecurity-blog/biggest-cyber-attacks-data-breaches-ransomware-attacks-of-march-2026
This is a brief: a short, sourced summary from our incident tracking. Full advisories add commands to check whether you are affected.