How We Built a Reliable AI Pentester
How Casa has automated scanning our code for vulnerabilities with frontier LLMs.
Casa Blog
Casa Blog - Bitcoin Security Made Easy
Latest posts
The Rise of the Machines
Casa's approach to the AI-accelerated security landscape.
The Coldcard Vulnerability, Explained: Who's at Risk and What to Do Now
Learn which Coldcard devices are affected, why the vulnerability matters, and the recommended next steps for singlesig and multisig users.
From Single Point of Failure to Full Sovereignty: A Portfolio Manager’s Story
TLDR: After a sophisticated scam nearly cost him his bitcoin, a veteran portfolio manager realized his digital asset custodian were a single point of failure. Casa empowered him with true self-custody: multi-signature vaults that require multiple keys to move funds, encrypted communication with Casa Advisors, and inheritance planning
A Social Engineering Story
Analysis of a call from a social engineer posing as Google support.
Evolving Casa's defenses against social engineering
Casa is the home for bitcoin and digital asset wealth, and a home should always feel safe no matter what is happening outside. Right now, the fastest-growing attack vector we are seeing against bitcoiners and people who have digital wealth is social engineering. Social engineering attacks typically arrive by
A Technically-Fluent Bitcoiner’s Inheritance Story
TLDR; A deeply technical early Bitcoiner realized that self-custody is only as strong as its worst-case inheritance plan. He needed a system that could survive incapacity, family catastrophe, and coercion without sacrificing sovereignty. With Casa, he built a collaborative 3-of-5 family multisig vault, validated full open-
The Bitcoin Inheritance Gap: What Most Bitcoiners Miss
Bitcoiners who have moved off exchanges, set up hardware wallets, and upgraded to multi-key wallets have done the work to ensure their bitcoin is secure. Most have not addressed inheritance yet. A traditional will covers real estate, bank accounts, and investment portfolios. Executors can contact institutions, present legal documents,
Don't Trust Clankers: AI Agents Are Dangerously Helpful
Lessons learned from exploring AI tooling.
The security review every serious bitcoiner should do in 2026
Most bitcoiners with meaningful positions have done something about security: a hardware wallet, a seed phrase backup, enough research to feel covered. Bitcoin security is a system, not a purchase. A setup built for the position you had in 2021 or 2022 often has real gaps for what you'
Announcing SOC 2 Type II Compliance
Casa's internal security controls have now been verified by independent auditors over a 6 month period.
A new look for your vault
At Casa, our mission is to help people and organizations take true control of their bitcoin, forever. We believe in sovereignty, and that individuals, families, and businesses should have the tools to protect their wealth without relying on third parties. Today we are introducing the new look for your Casa
Casa Expands Integrations for Seamless Self-Custody: Now with Rhino Bitcoin
Casa clients can buy bitcoin through Rhino's secure platform and easily transfer to Casa vaults.
Announcing SOC 2 Type I Compliance
Casa's internal security controls have now been verified by independent auditors.
Casa x Relai: A Trusted Partnership for Buying and Securing Bitcoin
Casa clients can buy bitcoin through Relai's secure, Switzerland based platform and easily transfer to Casa vaults. Relai clients get a discount on a Casa membership.