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Homebrew
Homebrew 7.0.0 is out, here’s what changed for security

Homebrew installs command-line software and desktop applications from the terminal on macOS and Linux, and Mac developers use it to set up their machines. On Sunday the …

Permify
Permify: Open-source authorization as a service

Permify is an open-source authorization service that answers access questions at run time: can user X view document Y, which posts can members of team Y edit. It keeps those …

OpenSSL
OpenSSL’s new alpha build speeds up post-quantum crypto

The OpenSSL project released the first alpha of OpenSSL 4.1.0, giving developers an early look at a version built for encrypted communication over unreliable connections and …

AI-Infra-Guard
AI-Infra-Guard: Open-source security scanner for AI systems

Tencent’s Zhuque Lab built AI-Infra-Guard, an open-source security scanner for AI systems. It fingerprints running services such as Ollama, vLLM and ComfyUI and checks …

BleachBit
BleachBit 6.0.4 fixes secure wiping that skipped clusters on Windows

The open source cleaner BleachBit reached version 6.0.4 this week, erasing caches, browser traces, and files on Windows, Linux, and now macOS. If you shredded a sensitive file …

Jellyfin
Jellyfin 12.0 security fixes arrive alongside the removal of legacy client logins

Jellyfin shipped version 12.0 of its media server. Several of the security fixes in it block requests built to reach files outside the folders the server is supposed to hand …

ToolHive
ToolHive: The open-source way to run any MCP server securely

ToolHive is an open-source platform that runs Model Context Protocol servers inside containers. An MCP server is the connector that lets an AI client like Cursor or Claude …

Sift
Open-source secrets scanning tool Sift hunts credentials in Microsoft 365, Slack, and Jira

Sift is a free, open-source command line tool that searches for passwords, API keys, and other sensitive data across the places a company keeps its work: local disks, Windows …

CrowdSec
Bot detection arrives in CrowdSec 1.8.0, along with two DoS fixes

Failed SSH logins pile up in an auth log, and a scanner walks a website looking for exposed admin paths. CrowdSec reads log sources and HTTP requests, works out which …

Halo-record
Halo-record: Open-source audit trails for AI agents

Brian Kuan wrote halo-record, a small Python package that sits inside an AI agent and writes down the moves it makes: tool calls, model calls, data access, approvals. Each …

vulnerability
AI AppSec tools agree on just 5% of security findings

Software vulnerabilities are turning into exploits within hours, and application security teams carry patch backlogs that go back years. Top types of viable application …

open-source cybersecurity tools
Hottest cybersecurity open-source tools of the month: August 2026

Presented here is a curated selection of noteworthy open-source cybersecurity solutions that have drawn recognition for their ability to enhance security postures across …

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