The most popular open-source cybersecurity tools in September 2026
Hottest cybersecurity open-source tools of the month: September 2026
AI summary
Open-source security tools worth watching in September 2026 include: Sift can scan passwords and API keys across local disks, Windows file shares, Active Directory, SharePoint, OneDrive, Teams, Slack, Jira, and Confluence; ToolHive runs MCP servers in containers under the Apache 2.0 license; Tencent Zhuque Lab's AI-Infra-Guard can identify services such as Ollama, vLLM, and ComfyUI, compare against more than 1,600 known CVEs, check MCP servers and agent skills, and run jailbreak evaluations on target models.