GreyNoise
Edge systems take the brunt of internet-wide exploitation attempts
Internet-facing VPNs, routers, and remote access services absorbed sustained exploitation attempts throughout the second half of 2025, with nearly 3 billion malicious sessions …
Hackers probe, exploit newly patched BeyondTrust RCE flaw (CVE-2026-1731)
Attackers are exploiting a recently patched critical vulnerability (CVE-2026-1731) in internet-facing BeyondTrust Remote Support and Privileged Remote Access instances. …
CISA confirms exploitation of VMware ESXi flaw by ransomware attackers
CVE-2025-22225, a VMware ESXi arbitrary write vulnerability, is being used in ransomware campaigns, CISA confirmed on Wednesday by updating the vulnerability’s entry in …
Too many Cisco ASA firewalls still unsecure despite zero-day attack alerts
Despite Cisco and various cybersecurity agencies warning about attackers actively exploting zero-day vulnerabilities (CVE-2025-20333 and CVE-2025-20362) in Cisco Adaptive …
GreyNoise unveils MCP Server to power AI-driven SOC workflows
GreyNoise Intelligence introduced the GreyNoise Model Context Protocol (MCP) Server to enable MCP-compatible LLMs and agents to query GreyNoise APIs directly, providing …
Can AI make threat intelligence easier? One platform thinks so
When analysts at RH-ISAC found themselves spending 10 hours a week just collecting threat intelligence, they knew their process wasn’t sustainable. They were manually tracking …
Brute-force attacks hammer Fortinet devices worldwide
A surge in brute-force attempts targeting Fortinet SSL VPNs that was spotted earlier this month could be a portent of imminent attacks leveraging currently undisclosed …
GreyNoise enhances threat response with real-time blocklists, feeds, and SOAR integrations
GreyNoise Intelligence introduced three new platform capabilities designed to help security teams detect, block and respond faster to emerging cybersecurity threats. These …
Check for CitrixBleed 2 exploitation even if you patched quickly! (CVE-2025-5777)
With PoC exploits for CVE-2025-5777 (aka CitrixBleed 2) now public and reports of active exploitation of the flaw since mid-June, you should check whether your Citrix …
Attackers are probing Palo Alto Networks GlobalProtect portals
Cybersecurity company GreyNoise is warning about a significant increase of scanning activity targeting internet-facing Palo Alto Networks GlobalProtect portals in the last 30 …
Attackers are chaining flaws to breach Palo Alto Networks firewalls
Exploitation attempts targeting CVE-2025-0108, a recently disclosed authentication bypass vulnerability affecting the management web interface of Palo Alto Networks’ …
Zyxel CPE devices under attack via critical vulnerability without a patch (CVE-2024-40891)
CVE-2024-40891, a command injection vulnerability in Zyxel CPE Series telecommunications devices that has yet to be fixed by the manufacturer, is being targeted by attackers, …