TL;DR Cristóbal Tárraga García, a member of the WatchGuard Threat Lab, uncovered a malware loader targeting Portuguese-speaking users that uses an Ethereum smart contract to dynamically locate attacker infrastructure and distribute additional payloads. The multi-stage infection chain combines…
TL;DR Euler Neto, a member of the WatchGuard Threat Lab identified an active malware campaign using the ErrTraffic Malware-as-a-Service framework to distribute multiple threats through compromised WordPress websites, ClickFix social engineering, and EtherHiding. The campaign uses Polygon blockchain…
Artificial intelligence is no longer just helping cybersecurity teams analyze alerts, write code, or investigate threats. Increasingly capable AI models can now reason through cybersecurity problems, identify vulnerabilities, chain weaknesses together, and autonomously pursue an objective. That…
Cybersecurity technology continues to improve, but one of the biggest security challenges facing organizations remains surprisingly familiar: human behavior. WatchGuard’s 2026 Cyber Hygiene Report, based on responses from employees at small and midsized businesses across the United States, Europe…
JADEPUFFER is the name of the agentic threat actor (ATA) that exploited a vulnerability in an Internet-facing Langflow instance ( CVE-2025-3248) and, without human intervention, gained persistence, enumerated a victim's systems, and deployed ransomware across the network. It was first reported on…
WatchGuard telemetry identified a campaign associated to TimbreStealer, which is known to target companies based in Mexico. This research, conducted by Euler Neto and Cristóbal Tárraga, describes behaviors similar to those observed in a previous campaign documented by Cisco Talos in 2024, which uses…
TL;DR: Iran-linked MuddyWater, also known as Seedworm, is using trusted software, DLL side-loading, and legitimate tools to quietly spy on high-value organizations across manufacturing, aviation, finance, education, government, and public sector environments. This campaign is not focused on…
The WatchGuard Attestation Team has uncovered an undocumented pivot framework written in Golang that opens a Smux-multiplexed SOCKS5-style pivot channel on each compromised host using one of two interchangeable transports: KCP-over-UDP with DTLS obfuscation or Noise-over-TCP with TLS obfuscation…
The DeadLock ransomware operation has existed since mid-2025, with most of the first reported sightings in mid-July, according to ThreatScene. Their report mentioned the group “now conducts double extortion” following a subsequent analysis in September 2025, which revealed newer DeadLock payloads…
WatchGuard telemetry identified a campaign associated to Grandoreiro that uses the DLL Side-Loading technique abusing four different softwares, targeting banks in Portugal. Also, it was identified cases of a known campaign that uses a malicious VBS to deliver the malware, targeting companies in…