2026-06-09 · 7 min
Amazon ASIN Hijacking: How to Protect Your Listing in 2026
ASIN hijacking happens when another seller takes over your product listing and damages your reputation or steals your Buy Box. Here is how to detect it and stop it.
What ASIN Hijacking Is
ASIN hijacking occurs when an unauthorized seller attaches their product to your ASIN and sells it alongside or instead of your product. The hijacker's product may be counterfeit, lower quality, or completely different from what you sell. Customers receive the wrong product and leave negative reviews that damage your listing. In some cases hijackers undercut your price and take the Buy Box, meaning Amazon directs sales to them instead of you.
How Hijacking Happens
Any seller can add their inventory to an existing ASIN if they have a matching GTIN or if Amazon's catalog matching algorithm links their product to yours. Amazon's open catalog is designed to make adding products easy, which also makes attaching to existing ASINs straightforward. Sellers who sell counterfeits or generic products specifically seek popular listings to piggyback on the sales volume.
How to Detect Hijacking
Check your product listing regularly for a "New" or "Used" offer from other sellers in the Buy Box or in the "Other Sellers on Amazon" section. If you are the brand owner and you see third-party sellers offering your product at a lower price than your authorized price, check whether those offers are legitimate resellers or whether they are selling counterfeits. Buy a unit from the suspicious seller and inspect it against your authentic product.
Brand Registry Is Your Primary Defense
Amazon Brand Registry gives you tools to report and remove infringing listings. Once enrolled, you can use the Report a Violation tool to flag suspected counterfeit offers on your ASIN. Amazon's automated protections through Brand Registry also proactively remove offers that fail authenticity checks. Brand Registry enrollment requires a registered trademark, which is worth pursuing for any serious product business.
Project Zero
Amazon's Project Zero program gives Brand Registry enrollees a self-service counterfeit removal tool that removes infringing offers without waiting for Amazon to act. You must have a strong track record of accurate violation reporting to qualify. Once approved, you can remove counterfeits yourself within minutes rather than days.
Transparency Program
Amazon's Transparency program assigns a unique code to every unit of your product. Customers can scan the code to verify authenticity. Hijackers selling counterfeits cannot generate valid Transparency codes and their products are flagged or returned. The program has per-unit costs that make it more practical for higher-priced products but it is the most robust protection available.