IntroductionIn December 2025, Zscaler ThreatLabz discovered a campaign linked to APT37 (also known as ScarCruft, Ruby Sleet, and Velvet Chollima), which is a DPRK-backed threat group. In this campaign ...

ActiveRecord is often learned by memorizing methods, not by understanding SQL behavior. This playground encourages experimentation and observation. exercises/level_1_basic_queries.md exercises/level_2 ...

This is a Ruby testing/reference project, so it follows standard Ruby gem conventions: lib/ for library code organized by concern, spec/ for RSpec tests, app/ for the system under test, and scripts/ ...

The top video conferencing services we've tested help you stay connected and communicate with clients, team members, and anyone else, no matter where you are. I’ve been writing about consumer ...