Severity: HighAction: Be aware

Quest Diagnostics Reports Cyber Breach Affecting ‘Certain Patient Records’

In a regulatory filing, Quest Diagnostics reported unauthorized access to its Quanum Lab Services Manager, a platform where certain clients can place test orders.

Excerpt from the primary source: SecurityWeek

Who is affected

Security professionals · Executives

What you should do · Be aware

No immediate action is indicated. Share this with the relevant teams and watch for updates.

Automated guidance based on this story's classification. Check the linked advisories for specifics.

Sources

We link to original and authoritative sources. Headlines and excerpts belong to their publishers.

Original reporting

Quest Diagnostics Reports Cyber Breach Affecting ‘Certain Patient Records’ SecurityWeek · securityweek.com · Oct 23, 2026 · Primary source

Additional reporting

Quest Diagnostics confirms data breach exposed patient records BleepingComputer · bleepingcomputer.com · Oct 23, 2026
Severity: HighAction: Be aware

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Threat actors don't need to rely on malware to breach organizations anymore. They're simply calling help desks and politely asking for access, with a little help from artificial intelligence.

Severity: HighAction: Be aware

11 Million Impacted by Capcom Data Breach

The hackers stole 11 million email addresses from CAPCOM ID and changed the login passwords for 196 accounts.