Our Mission
Built for defensive security
LeakJar exists to help organizations protect their users from the consequences of breached credentials. We build privacy-preserving tools that make it simple to screen, detect, and respond to credential exposure.
Our Values
The principles that guide everything we build.
Privacy-first
We use k-anonymity and advanced hashing so that neither we nor anyone else ever sees your users' passwords. Privacy isn't an afterthought—it's our architecture.
Developer experience
Clean APIs, comprehensive documentation, and SDKs that let you integrate breach detection in minutes, not weeks. We build for builders.
Responsible disclosure
We handle breached credential data with the utmost care. Our acceptable use policy ensures our tools are only used for defensive security purposes.
Transparency
From our data sourcing to our security practices, we believe you deserve to know how we operate. Our documentation is our commitment to openness.
Our Team
We're a small team of security and engineering professionals passionate about making the internet safer for everyone.
Team Member
Engineering
Team Member
Security
Team Member
Product
Interested in joining us?
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