2021 ON24 — ransomware on internal systems; current/former employee and beneficiary data
Data compromised
Workforce and dependent benefits-linked PII per breach letters
Technical writeup
ON24 detected a June 2021 security incident it later described in securities and breach-notification materials as involving ransomware affecting some internal systems. Affected records were characterized as belonging to current and former employees and their beneficiaries, with categories in consumer letters including names, addresses, DOB, Social Security numbers, and health-plan or benefits enrollment information; customer webinar platform data was not the primary disclosure focus in public summaries.
Root cause
Ransomware compromise of internal corporate systems (per company and regulator-facing notifications)