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The Register
Intrusions began weeks before Trimble patched the Cityworks hole A suspected Chinese crew has been exploiting a now-patched remote code execution (RCE) flaw in Trimble Cityworks to break into US local government networks and target utility management systems, according to Cisco's Talos threat intelligence group.…
The Register
Criminals have noticed that spreadsheet's XLL files add custom functionality - including malware It took a few years and one temporary halt, but in July Microsoft finally began blocking certain macros by default in Word, Excel, and PowerPoint, cutting off a popular attack vector for those who target users of Microsoft's Windows OS and Office suite.…
The Register
Entire swaths of gear relies on vulnerability-laden Open Automation Software (OAS) A researcher at Cisco's Talos threat intelligence team found eight vulnerabilities in the Open Automation Software (OAS) platform that, if exploited, could enable a bad actor to access a device and run code on a targeted system.…
The Hacker News
Hackers exploited a critical Cisco Catalyst SD-WAN flaw, fixed in February, to plant custom malware inside the systems that control an organization's SD-WAN network. The malware, called KeyDrift, is designed to copy the keys that encrypt traffic between sites and store them for later use, Cisco Talos said on October 28. Talos calls the attacks historical but does not specify when they
The Hacker News
A Windows malware called CLOSEDQUORUM is built to take orders from a vote of up to four AI models instead of an attacker's server, Cisco Talos said on September 22. The models can choose to steal Windows credentials, saved browser passwords, and crypto wallet data. Talos has not seen this setup work from start to finish, and the public version of the malware does not work as it is.
Bleeping Computer
Cisco Talos says two recently patched Secure Firewall Management Center (FMC) vulnerabilities have been exploited by three separate threat clusters linked to ransomware and state-sponsored attacks. [...]
The Hacker News
The Chaos ransomware group ran its command-and-control through the victim's own browser. Cisco Talos on Thursday detailed msaRAT, the Rust implant behind it, found on a compromised Windows machine ahead of the encryptor. The implant never opens an outbound connection of its own. Its process talks to 127.0.0.1 and nothing else. It starts Chrome or Edge in headless mode and drives the browser
The Hacker News
A Chinese threat actor tracked as UAT-7810 is actively refining its bespoke malware to expand its Operational Relay Box (ORB) network by breaking into internet-facing networking devices. According to findings from Cisco Talos, UAT-7810 is an advanced persistent threat (APT) actor that's responsible for maintaining and proliferating LapDogs, an ORB network that first came to light in June 2025.
The Register
It's a 'complete BEC operations environment,' Talos researcher says
The Hacker News
A sophisticated China-nexus advanced persistent threat (APT) group has been attributed to attacks targeting government entities in South America since at least late 2024 and government agencies in southeastern Europe in 2025. The activity is being tracked by Cisco Talos under the moniker UAT-8302, with post-exploitation involving the deployment of custom-made malware families that have been put