• Day 9: Message Routing (in Payments Network)

  Jul 28, 2026

• Day 8: EMV vs MagStripe

  Jul 27, 2026

• Day 7: Fraud Checks & Risk Scoring

  Jul 26, 2026

• Day 6: Data Element 4 & Data Element 7

  Jul 25, 2026

• Day 5: Data Element 2 (PAN) & Security Considerations

  Jul 24, 2026

• Day 4: Reversal & Advice Messages

  Jul 23, 2026

• Day 3: Message Structure

  Jul 22, 2026

• Day 2: 4 Party Model

  Jul 21, 2026

• Day 1: Learning about ISO8583

  Jul 20, 2026