Cyber espionage campaign targeted stock exchange executive’s Outlook account
Attackers spent five months silently stealing emails from a stock exchange executive’s Outlook account in a suspected espionage operation. A threat actor quietly sat inside a senior executive’s Outlook account at a major global stock exchange for roughly 150 days, from October 2025 to March 2026. Broadcom’s Symantec and Carbon Black threat-hunting team investigated the […]

A threat actor quietly sat inside a senior executive’s Outlook account at a major global stock exchange for roughly 150 days, from October 2025 to March 2026.
Broadcom’s Symantec and Carbon Black threat-hunting team investigated the incident and published their findings this week. They don’t name the exchange, and they don’t attribute the attack to any known threat actor.
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