Journal | Rodrigo Barbosa

Journal

Notes on building things well.

Writing on frontend engineering, design systems, and the craft decisions that don't usually make it into a case study.

HardwareAugust 1, 20269 min read

The Swiss Army Knife of the IoT Era: What Devices Like the Flipper Zero Are Really Teaching Us

A small orange-and-black gadget with a cartoon dolphin can read an RFID badge, replay an infrared signal, and scan for Bluetooth devices in seconds. On what compact multi-protocol tools actually teach engineers, and the ethical line that separates research from misuse.

PrivacyJuly 28, 202610 min read

OPSEC and the Myth of Total Anonymity

A VPN hides your IP address. It does nothing about the fact that you reuse the same username everywhere. On why total anonymity might not be achievable for anyone living an ordinary connected life - and why that's still worth thinking about.

SecurityJuly 26, 20269 min read

The Weakest Link in Cybersecurity: Why It's Easier to Hack People Than Computers

Most cyberattacks aren't sophisticated technical break-ins - they're a well-written email that convinces someone to click. A look at why social engineering, not code, is the real weak point in cybersecurity.