Anubis, a website protection system, deployed WebAssembly after a year-long development process. The system uses Proof-of-Work schemes similar to Hashcash to combat aggressive AI company scraping of websites. This approach adds computational load that's negligible for individual users but becomes expensive for mass scrapers, making large-scale data harvesting economically unfeasible.

The technology serves as a temporary solution while developers focus on fingerprinting and identifying headless browsers—particularly through font rendering behaviors—so legitimate users aren't burdened with proof-of-work challenges. However, Anubis requires modern JavaScript features that plugins like JShelter disable, necessitating users to disable such protection extensions for proper functionality.

Website administrators can implement Anubis to protect their servers, though it may cause temporary downtime and accessibility issues for some visitors during the challenge process.