Building security for the way blockchain is actually used.
Blockchain participation is moving beyond a single signer. Our focus is the layer of security needed when decisions and execution are shared across people, applications and automated systems.

What we believe, and how we build.
“We’re not replacing private-key security. We’re adding a layer: what a key — or the people and software behind it — is allowed to do.”
Open and inspectable
Our core enforcement layer is open source. A closed control layer asks for trust; an open one lets you examine the enforcement and reuse it.
Show the failed case
A good security demonstration includes the request that’s denied — and the on-chain result that proves it.
Usable, not just secure
Controls only help if teams can configure and understand them. We explain with real operations and interfaces, not jargon.
Precise over reassuring
We state what a control does and where it stops. No “impossible to hack”, no blanket guarantees.
Ways to collaborate with Particle CS.
Whether you run operations, build with us, need expert help or want to partner, it starts from a real workflow — not a generic demo.
Facts you can check.
Particle Crypto Security LTD. We list only what you can verify.
Partnerships, research or a real workflow?
We’d like to hear what you’re working on.