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.
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
Does a similar job
all alternatives →
5+ Billion Passwords in Order of Most Popular2017 · github.com · ▲184Version 2 is live! Wordlists sorted by probability originally created for password generation and testing - make sure your passwords aren't popular! - berzerk0/Probable-Wordlists
Cuckoo Filter Implementation in Go, Better Than Bloom Filters2016 · github.com · ▲181Cuckoo Filter implementation in Go, better than Bloom Filters (unmaintained) - irfansharif/cfilter
- PAPublic API endpoint to check for 6.5B known passwords2017 · dazzlepod.com · ▲24
Entropy Based Password Validation2020 · github.com · ▲31Validate the Strength of a Password in Go. Contribute to wagslane/go-password-validator development by creating an account on GitHub.
Open-source serverless security lake powered by Rust + Apache Iceberg2022 · github.com · ▲63Open source security data lake for threat hunting, detection & response, and cybersecurity analytics at petabyte scale on AWS - matanolabs/matano

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