EMV & Card-Present Security
How PINs Stay Secret: PIN Blocks, PIN Pads, and End-to-End PIN Security
Your PIN is encrypted the instant you type it. How PIN pads, PIN blocks, and key hierarchies keep PINs secret from merchant…
Regulations & Standards
DORA and Payments: What EU Operational Resilience Rules Mean for Payment Firms
The EU's Digital Operational Resilience Act applies to payment institutions and their ICT providers. Its five pillars, and how it overlaps PCI…
E-commerce & Online Payments
Securing Payment APIs and Webhooks: Authentication, Idempotency, and Replay Defense
Practical security for payment APIs and webhooks — key handling, webhook signature verification, idempotency keys, replay protection, and rate limits.
Fraud Prevention
Measuring Fraud Prevention: The KPIs That Show Whether Your Program Works
Fraud rate alone hides more than it reveals. The KPIs — false positive rate, approval rate, chargeback rate — that show real…
Emerging Threats & Trends
When AI Agents Go Shopping: Payment Security for Agentic Commerce
AI agents are starting to browse, choose, and pay on users' behalf. The new authentication, authorization, and fraud questions agentic commerce raises.