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Dev tools · August 15, 2017

Checking 320M passwords in milliseconds with serverless bloom filters

Using serverless functions to provide an API for checking potential passwords against an enormous corpus of passwords leaked from security breaches. - jthomas/serverless-pwned-passwords

Checking 320M passwords in milliseconds with serverless bloom filters launched on August 15, 2017 with 33 votes, #800 of 3,214 launches that month and more than 75% of that year's launches. The site was still online in September 2026, 9 years on.

Visit github.com ↗Alternativestop 25% of August 2017

In plain words

This project demonstrates how to check 320 million passwords against a bloom filter using serverless architecture, completing the verification in milliseconds. It's designed for developers building password security tools or studying efficient data structures at scale. The approach stands out by leveraging serverless computing to handle massive password datasets without maintaining dedicated infrastructure, making it practical for applications that need fast breach-database lookups.

written from the facts on this page · September 2026

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