firewall
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 …
74,000 Fortinet firewall credentials exposed in FortiBleed data leak
A Russian-speaking cybercriminal group has stolen credentials contained in the configuration files of nearly 74,000 Fortinet firewalls and VPN gateways around the world. The …
Product showcase: NetGuard open-source firewall for Android
NetGuard is a free, open-source firewall for Android phones and tablets that provides users with a simple way to block internet access. Android does not allow VPN services to …
State-sponsored hackers likely behind zero-day attacks on Palo Alto firewalls
Palo Alto Networks believes the in-the-wild exploitation of a zero-day vulnerability (CVE-2026-0300) in its firewalls is likely the work of state-sponsored threat actors. A …
Root-level RCE vulnerability in Palo Alto firewalls exploited (CVE-2026-0300)
A critical vulnerability (CVE-2026-0300) affecting Palo Alto Networks firewalls is being actively exploited by attackers, the security company acknowledged today, and urged …
Pipelock: Open-source AI agent firewall
AI coding agents run with shell access, environment variables containing API keys, and unrestricted internet connectivity, creating a single point of failure where one …
Open-source IPFire DNS Firewall blocks malware and phishing at the resolver
The IPFire project shipped Core Update 201 for its 2.29 release line, bringing DNS-layer domain blocking into the open-source firewall distribution. The update replaces two …
Product showcase: LuLu reveals unauthorized outbound connections from Mac apps
LuLu is a free, open-source firewall for macOS that lets you control which apps are allowed to send data from your computer. macOS includes a built-in firewall, but it mainly …
New Cisco firewall malware can only be killed by pulling the plug
Suspected state-sponsored attackers are using a custom backdoor to persistently compromise Cisco security devices (firewalls), the US CISA and the UK National Cyber Security …
Progress Software fixes sneaky WAF bypass vulnerability (CVE-2026-21876)
Progress Software has fixed a slew of high-severity vulnerabilities in MOVEit WAF and LoadMaster, including a flaw (CVE-2026-21876) that may allow attackers to bypass firewall …
Cisco FMC flaw was exploited by Interlock weeks before patch (CVE-2026-20131)
A critical vulnerability (CVE-2026-20131) in Cisco Secure Firewall Management Center (FMC) that Cisco disclosed and patched in early March 2026 has been exploited as a …
Cisco warns of SD-WAN Manager exploitation, fixes 48 firewall vulnerabilities
Cisco has confirmed that two Catalyst SD-WAN Manager vulnerabilities (CVE-2026-20128 and CVE-2026-20122) patched in late February 2025 are being exploited by attackers. The …
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