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Meet the expert

Charlie Walker

Charlie Walker

Sales Manager

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After attending art school and university to study politics and international relations, Charlie made the obvious leap to Sales. He joined Ravelin shortly after its inception, climbing the ranks to become VP of Sales – where his creativity and strategic acumen come together in the fight against fraud.

Subject matter expertise

Supplier & marketplace fraud Link analysis & graph databases Account security & ATO Ravelin's solutions Fraud trends Payments & payment fraud
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Latest insights by this author

Fighting fraud in the airline industry – the how and the why
Fraud analytics

Fighting fraud in the airline industry – the how and the why

The importance of preventing account takeovers
Account takeover

The importance of preventing account takeovers

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Solutions overview Support & investigations Online payment fraud Account security Refund abuse Promo abuse Marketplace fraud 3D Secure

Insights

Global 3DS, SCA & Payments Map Fraud Trends Survey 2025 Global Payments Report 2026 Link analysis & graph networks Machine learning for fraud Refund & promo abuse guide Online payment fraud guide Account takeover guide PSD2 and SCA guide

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Resource zone Blog Events Product updates Developer docs for PSPs Developer docs for merchants Tech blog Ravelin Help Center Open source licenses

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