Hackers Spied on a Stock Exchange Executive’s Outlook Mailbox for Five Months

June 4, 2026
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Hackers Spied on a Stock Exchange Executive’s Outlook Mailbox for Five Months

Unknown attackers spent at least five months inside the Outlook mailbox of a senior executive at a major global stock exchange, copying the inbox out in small, repeated batches and routing it through Dropbox and OneDrive so the traffic blended into normal cloud activity.

Symantec and Carbon Black’s Threat Hunter Team reported the campaign this week. This points to espionage, not a money grab:

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Hackers Spied on a Stock Exchange Executive’s Outlook Mailbox for Five Months

Hackers Spied on a Stock Exchange Executive’s Outlook Mailbox for Five Months

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