Open Source & Developer Tooling
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Open source software that powers real production systems, and the macOS tooling that keeps high-output engineering teams productive.
macOS Passive Domain Vulnerability Scanner: Full Guide
Below is a fairly comprehensive passive penetration testing script with vulnerability scanning, API testing, and detailed reporting. Features Installation Required Dependencies Optional Dependencies Usage Basic Syntax Options Examples: Network Configuration Default Interface: en0 (bypasses Zscaler) To change the interface, edit line 24: The script automatically falls back to default routing if the interface is unavailable. Debug Mode […]
Read more →Mac Screenshot Format: Change PNG to JPEG, GIF or PDF
There are a few things that I tweak when I get a new Macbook, one of which is the screenshot format (mainly because it doesnt natively render in Whatsapp). So I thought I would share the code snippet that you can run in Terminal to alter the default image type of your screenshots: For JPEG […]
Read more →Auto-Renew Let’s Encrypt Certs on Linux with Cron
If you want to automatically renew your certs then the easiest way is to setup a cron just to call letsencrypt periodically. Below is an example cron job: First create the bash script to renew the certificate Now enter the script in the following format into nano: Now edit the crontab to run the renew […]
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Software Engineering : When Building Beats Buying (And When It Doesn’t)
1. A disclosed bias I spent twelve years writing algorithmic trading software before any of the cloud infrastructure work. That is where the bias actually comes from, not from EC2. Trading systems taught me that being quick and being good are not separate goals you trade off against each other, they are the same requirement […]
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