GreyNoise
Patched Zyxel GS1900 switches remained open to in-the-wild exploit (CVE-2026-107441)
Zyxel GS1900 series network switches that received a fix for a flaw that was later reported to have been exploited in the wild are still open to an exploit attackers used, …
NetScaler zero-day exploitation escalates into mass attacks (CVE-2026-88771)
The hacking of internet-exposed, vulnerable Citrix NetScaler ADC and Gateway deployments has escalated. What started as stealthy targeting via zero-day exploits has now become …
Attacker compromised nearly 1000 Zyxel switches since August (CVE-2026-7273)
A Chinese-speaking threat actor has exploited a vulnerability (CVE-2026-7273) in unpatched ZyXEL GS1900 Smart Managed Switches and has exfiltrated sensitive data from 996 …
AI agents exploited PaperCut flaws to breach 395 organizations
A threat actor built a working exploit for PaperCut print management software, then handed the job of breaking into hundreds of organizations to AI agents that did most of the …
Threat actors are posing as AI crawlers to hunt for exposed credentials
Attackers are disguising automated scanning as traffic from AI crawlers operated by OpenAI, Anthropic, Google, Perplexity and other companies while searching websites for …
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 …
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