Hottest cybersecurity open-source tools of the month: October 2025 This month’s roundup features exceptional open-source cybersecurity tools that are gaining attention for strengthening security across various environments. Chekov: Open-source static code analysis tool Checkov is an open-source tool designed to help teams secure their cloud infrastructure and code. At its core, it’s a static code analysis tool for infrastructure as code (IaC), but it also goes a step further by providing software composition analysis (SCA) for container images and open source packages. DefectDojo: Open-source DevSecOps platform DefectDojo is an open-source tool for DevSecOps, application security posture management (ASPM), and vulnerability management. It helps teams manage security testing, track and…