Any day that you see one of your projects make it to public release is a good day, and today is a damn good day. Today I introduce the world to CertStream — a free service and simple libraries for getting data from the Certificate Transparency Log (CTL) network in…

I’m a huge fan of open source software. It, in a very organic way, creates a community of individuals working together to build something awesome not for monetary reward, but because they’re passionate about it. Sure tools like GitHub & friends have their problems, but It’s truly breathtaking to see…

In part 1 we examined HOW to parse Certificate Transparency Log information using Python, but the real value comes from being able to retrieve, store, and search them cheaply and efficiently, which what I set out to do. NOTE: If you’re coming from the pentester.io article, all you have to…

This is part 1 of a series I’m doing on collecting, parsing, storing, and querying 250,000,000+ certificates from CTL logs, You can find part two here! While building our soon-to-be-released first product — phishfinder, I spent a large amount of time thinking about the anatomy of a phishing attack, and…

This is truly an exciting (and terrifying!) time in my life. Today I introduce the world to Cali Dog Security: a software company with its sights focused on making no-BS security products that emphasize practicality, a beautiful user experience, and making security tools affordable for anyone who needs them. …

I’ve worn many hats over the years - everything from IT support and DevOps to starting the internal application security team at a large multi-national defense contractor. …

Hi there, my name is Ryan, and I’m an engineer. I build lots of stuff, including WSStat and maintaining Sulley, and have a true drive and passion for security. I spend my days either breaking the internet and doing security research, or helping to make security tools more accessible to…