Blog: Rethinking Application Security | Cobalt | Mircea Mare

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Mircea Mare

Mircea Mare has been part of the Cobalt Core team since 2019. He has over 10 years of experience building web applications and APIs as a software engineer, and he performs penetration tests and secure code reviews with an emphasis on authentication and access control. He has implemented OAuth solutions extensively in web apps and writes a newsletter on Ruby on Rails security and architecture.

The Hidden Cost of Client-Side Convenience

January 14, 2026

Est Read Time: 5 min

Analysis revealed that Keycloak authentication artifacts (Access and ID tokens) are being serialized directly into the...

Cobalt Core