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open-source cybersecurity tools
20 open-source cybersecurity tools to keep your team ready for anything

AI is changing how security teams find vulnerabilities, analyze code, test applications, and protect infrastructure. Developers are building tools to secure AI systems …

Kali Linux
Kali Linux 2026.2 trims VM boot times, refreshes its desktops

Penetration testers who run Kali Linux inside virtual machines boot their systems faster after the 2026.2 release. The change comes from a decision about graphics firmware, …

DarkMoon
DarkMoon: Open-source AI pentesting platform

Penetration testing has long run on expert time, with specialists spending days probing a network or web application by hand. Manual engagements stretch across weeks, expert …

See
Companies keep bolting AI onto their products, and the security bill is coming due

Companies keep bolting AI and LLM features onto their products, and the security results are starting to show a pattern. The vulnerabilities those features create get rated …

AI
Security testing was built for a slower world

Software teams are pushing code into production faster than security testing can keep up. AI is accelerating development cycles and adding pressure to security programs that …

Lyrie
Lyrie: Open-source autonomous pentesting agent

Penetration testing has usually required weeks of manual work, specialized tooling, and teams with narrow skill sets. Lyrie, an open-source autonomous security agent built by …

open-source security tools
25 open-source cybersecurity tools that don’t care about your budget

Regardless of the operating system you use, managing secrets, apps, cloud, compliance, and security operations can be overwhelming. The free, open-source tools presented in …

Pentagi
PentAGI: Open-source autonomous AI penetration testing system

Penetration testers have long relied on collections of specialized tools, manual coordination, and documented runbooks to work through a target assessment. PentAGI, an …

AI
Training an AI agent to attack LLM applications like a real adversary

Most enterprise software development teams now ship AI-powered applications faster than traditional penetration testing can keep up with. A security team with 500 applications …

Kali Linux 2026.1
Kali Linux 2026.1 ships BackTrack mode, eight new tools, and a kernel upgrade to 6.18

Penetration testers running Kali Linux have a new release to work with. Version 2026.1 delivers the annual theme refresh, a new BackTrack-inspired mode in kali-undercover, …

cyber threat
Bug bounties are broken, and the best security pros are moving on

Penetration testing engagements are organized as scheduled contracts with defined scope, set testing windows, and direct communication channels with client teams. Cobalt’s …

AI vs human
What happens when AI teams compete against human hackers

A cybersecurity competition produced what may be the largest controlled dataset comparing AI-augmented teams to human-only teams on professional-grade offensive security …

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