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Reverse Domain Hijacking

Abusing the UDRP in bad faith to try to seize a domain from its legitimate owner.

FBFenwei BianAuthorVZVictor ZhouEditorJune 22, 2026
  • glossary

Reverse domain hijacking (RDNH) is a declaration by a UDRP panel that the complainant brought its case in bad faith, in an attempt to deprive a legitimate domain owner of their registration rather than to remedy genuine trademark abuse. A panel will make an RDNH finding when the complainant knew or should have known it could not satisfy one of the three required UDRP elements — for example, when the registrant demonstrably registered the domain before the trademark existed, or where the complainant's mark is descriptive and the domain has an obvious generic meaning. RDNH is a reputational sanction only; the UDRP provides no monetary penalties against complainants, though a pattern of abusive filings can inform future panels. Well-resourced brands have been found to engage in RDNH when they covet a short, valuable domain and file a weak case hoping the registrant will default. Because domain hijacking is a separate concept involving unauthorized account takeover, the "reverse" in RDNH specifically signals that it is the complainant, not the registrant, acting improperly. Domain owners whose tokenized assets are targeted by a UDRP complaint should seek specialist counsel promptly — the default rate in UDRP proceedings is high, and a missed deadline results in transfer.

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Contributors

Fenwei Bian

Software Developer & Writer • Namefi
Author

Fenwei Bian is a software developer in her thirties who spends her working hours in pull requests and her weekends with her hands in soil or sawdust. Years of open source on GitHub taught her that names are interfaces: a good one is clear, honest about what it does, and kind to whoever has to use it next.

She gardens because it rewards patience and punishes wishful thinking, and she does woodwork because a joint either fits or it doesn't. Both habits show up in how she writes about naming — measure twice, check the source, and don't sand over a rough spot and hope no one notices.

For Namefi she writes about how domain markets actually move, the practical trade-offs of tokenizing and flipping names, and picking a domain you'll still be glad you own in twenty years.

GitHub

Victor Zhou

Founder & Standards Editor • Namefi
Editor

Victor Zhou is a technology founder and standards editor focused on digital identity and trust. He founded Namefi, edits Ethereum Improvement Proposals, and previously led smart-contract architecture work at Google Labs.

His work sits at the intersection of naming, ownership, and the systems people use to establish identity online. That perspective makes him especially interested in the way names move between personal meaning, public recognition, and digital infrastructure.

For Namefi, Victor edits and writes about domains as durable digital identity: how names become ownable onchain assets, how tokenization changes custody and trust, and what naming can learn from the systems people use to establish identity online.

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