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Inside View — From the Assessment Floor

Behind the Firewall

Real cybersecurity — not theory. Stories, breakdowns, and observations from inside financial institutions and enterprise security programs.

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Behind the Firewall
From the assessment floor, not the textbook
UNTRUSTED INTERNET TRUSTED ZONE FIREWALL CR Core Router Core Switch Server Workstation Laptop Switch R Router OUT → Social (blocked) VISA Visa Mastercard AMEX Amex OUT Outgoing
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Behind the Firewall 8 min read

What Actually Happens in the 1 Second Your Bank Approves Your Card

You tap your card at a coffee shop. The terminal beeps. Approved.

April 13, 2026 Read article →
Behind the Firewall
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Newest first
Behind the Firewall 8 min read
What Actually Happens in the 1 Second Your Bank Approves Your Card
You tap your card at a coffee shop. The terminal beeps. Approved.
April 13, 2026
Behind the Firewall
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SWIFT CSP Assessor CISA CEH ISO 27001 Lead Implementer CC (ISC2) 35 ISO 27001 Engagements 27+ PCI DSS ROCs
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