(aka cak on GitHub / derail at DEF CON)
Securing software through code, data, and community.
I help teams ship secure software by aligning strategy, architecture, and automation with clear metrics and sound decisions.
At Posit, I shape security strategy for products used by millions of data scientists worldwide.
I also maintain the web version of HackerTracker, volunteer as a DEF CON Goon, advise the NumFOCUS Security Committee, and build open-source tools for developers and defenders.
All opinions are my own.
- Security strategy with measurable outcomes
- Secure software architecture and enablement
- Automation that turns data into action
- Community, mentoring, and open-source stewardship
- secure — A modern Python library for HTTP security headers (CSP, HSTS, etc.) with secure defaults and presets for Shiny, FastAPI, Django, Flask, and other ASGI/WSGI apps.
- osv-supply-chain-insights — Data-driven analysis of open-source supply-chain vulnerability trends using OSV.
- elf — A modern Advent of Code helper that fetches inputs, submits answers, and tracks your progress.
TypeError
Open-source tools that make defense measurable and practical—bringing vulnerability data, security engineering, and automation together to help teams take action.
Snally
A creative playground for development and data experiments, and a home for ideas that do not fit anywhere else.
💌 Email: caleb@typeerror.com
💼 LinkedIn: linkedin.com/in/calebk
🌐 Portfolio: derail.net
🧩 TypeError: typeerror.com
🐉 Snally: snally.com
🔗 More Links: linktr.ee/typeerror