If you have ever wondered why fraudsters keep slipping past your country blocks and IP rules, the answer is almost always the same: they are using a VPN or proxy to mask their real location. A modern fraudster routinely cycles through residential proxies, datacenter VPNs, or Tor exits — appearing to be a customer in your home country while sitting in a high-fraud region. This guide covers how VPN and proxy abuse hurts Shopify merchants, how to detect it, and the realistic setup that catches it before checkout.

Why VPN traffic is a Shopify security problem

Not all VPN traffic is malicious. Many legitimate customers use VPNs for privacy or to access region-restricted content. But on a Shopify store, VPN traffic correlates strongly with abuse:

• Bypassing country blocks. You blocked Nigeria; the fraudster connects via a US VPN and tries again.
• Bypassing region-based pricing. You sell at 30% off in India; a US customer connects via Indian VPN to get the discount.
• Discount-code stacking. Same person, multiple VPN locations, multiple “first-time customer” discounts.
• Chargeback fraud preparation. Card thieves prefer to checkout from a VPN that geographically matches the stolen card’s billing address — makes fraud detection harder.
• Scraper anonymization. Scrapers rotate through VPN exits to avoid IP-based rate limiting.

Studies of Shopify chargebacks consistently show VPN/proxy users have 5–10× higher chargeback rate than direct-IP users. That signal alone makes VPN detection worth setting up.

Types of VPN/proxy you need to detect

• Datacenter VPNs. NordVPN, ExpressVPN, Surfshark, etc. Easy to detect because exit IPs are in known datacenter ranges.
• Residential proxies. Harder to detect — IPs look like real home connections, but they are sold as a service to attackers. Common providers: Bright Data, Oxylabs, Smartproxy.
• Tor exit nodes. Easy to detect (public list), but blocking all Tor may cost you legitimate privacy-conscious users.
• Free proxies. Cheap, abundant, almost always associated with abuse. Easy to detect.
• Mobile carrier NAT. Not really a VPN — but many users on mobile carriers appear to come from a single IP. Do not over-block.