Finance · Incident Response
Global Payments Processor
Contained an active intrusion in a card-processing environment within 4 hours of engagement.
The challenge
What we walked into
A mid-sized payments processor detected anomalous lateral movement inside its cardholder data environment during peak trading hours, with regulatory notification clocks already running.
Our approach
What GreyHex did
GreyHex's incident response team mobilised within 40 minutes, isolating affected segments and eradicating attacker persistence without halting transaction processing.
Results
Measured outcomes
Contained within 4 hours of engagement
Zero cardholder data confirmed exfiltrated
Regulatory notification met within required window
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