Mithril — More Defenders
English company introduction · Selected D / Charon voice
20 October 2026

A kind heart can change a life. But who protects a connected world? Meet Satoshi, a new graduate stepping into Hikari Baito, where ordinary people discover the power to become defenders.

That is the world we want to build with Mithril. Whitehat as a Service. Our ambition: the strongest shield, and the sharpest spear, working together to protect people, businesses, and governments.

The shield is Kotoba, our modern Lisp machine. Its design makes authority explicit, checks programs, and enforces boundaries at the host. In an internal Apple M4 comparison across nineteen Embench workloads, translated Kotoba ports used about eighty percent of the normalized execution time of the original C programs.

The spear is Norbert, our model for authorized security research. Our pitch deck identifies its MiMo base model among the top performers on a cyber defense index. We keep that base model result separate from the evaluation of Norbert itself. Capability must come with control.

Here is the product today. In Mithril Code, open an editable sample. Inspect the source and its explicit step budget. Compile it. The system checks the artifact and produces a receipt.

The public knowledge interface brings that same idea to security research. Search a technique, retrieve its exact identifier, and follow the source. Evidence becomes something another engineer can inspect and reuse.

We are already applying this approach in security work. Our documented track record includes four submitted Bugcrowd reports across four programs. Each submission is tracked separately from acceptance, remediation, and payment.

Now imagine Satoshi becoming a defender himself. Through Dojo, our goal is to bring practical, AI assisted security education to engineers around the world. Learn to set scope, investigate, reproduce findings, and help fix them. Then bring those skills to real, authorized work.

Every permissioned engagement can strengthen the next one. Findings, attack paths, remediation, and actor intelligence become connected knowledge. With consent, review, and careful data rights, that knowledge can improve training and models. Our ambition is the world’s most valuable attack and defense data platform.

A community that learns. A platform that helps experts protect organizations. A data foundation that compounds. Free developer access can lead to team training and scoped enterprise engagements. Mithril, by Kotoba Labs. Help us build a world with more defenders.