Optimizely Confirms Data Breach After Vishing Attack

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Summary

Optimizely says vishing attackers accessed internal systems and stole basic business contact information from CRM records and limited back-office documents. The company reports no evidence of access to sensitive customer data and warns of follow-up phishing; ShinyHunTER

Key points

  • Optimizely says attackers gained access to internal systems through a voice-phishing (vishing) attack.
  • The company says attackers stole basic business contact information from certain CRM records and a limited set of internal back-office documents; the number of affected customers was not disclosed.
  • Optimizely reports no evidence that attackers accessed sensitive customer data or personal information beyond basic business contact details.
  • The company says attackers could not escalate privileges, install software, or create backdoors, and that business operations continued without disruption.
  • Optimizely warned customers to watch for follow-up calls, texts, or emails attempting to obtain passwords, MFA codes, or other credentials.
  • The article says a connection to the ShinyHunters extortion operation is suspected, but Optimizely has not named the attackers.
  • The article describes related SSO vishing tactics and device-code vishing using the OAuth 2.0 device authorization grant flow; it does not establish that these techniques were used in the Optimizely incident.

Article Details

Victim Organization
Optimizely
Incident Type
Unauthorized access and theft of basic business contact information following a voice-phishing (vishing) attack
Data Types Exposed
  • Basic business contact information
Affected Records
Undisclosed number of customers; the number of exposed records was not disclosed.
Operational Impact
Access was confined to certain internal business systems, CRM records, and a limited set of back-office documents. Optimizely said business operations continued without disruption and reported no evidence of access to sensitive customer data beyond basic business contact information.
Ransom Or Extortion
No ransom demand or extortion payment was reported. The article says the incident is suspected to be linked to the ShinyHunters extortion operation; threat actors reportedly contacted the company on February 11 claiming access to its systems.
Claim Status
confirmed

MITRE ATT&CK

Threat Actors

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