Cisco Talos is actively tracking the exploitation of two vulnerabilities in Cisco’s Secure Firewall Management Center (FMC) Software.
Category: Cisco Talos Blog
Microsoft Patch Tuesday for September 2026 — Snort rules and prominent vulnerabilities
Microsoft has released its monthly security update for September 2026, which includes 973 vulnerabilities affecting a range of products, including 113…
ClearFake WebDAV infection chain delivers Amatera stealer, ZigCryptoStealer, and NetSupport Manager
We assess with moderate confidence that the attacks are not targeted at a particular organization, but are a part of a cryptocurrency and…
ClickFix moves into the browser: Cryptocurrency theft with Google-hosted C2
Cisco Talos is tracking a cryptocurrency-stealing campaign that abuses the Google Visualization API for command and control (C2), retrieving obfuscated…
The story behind the intelligence
From engaging with cybercriminals to surviving a live Flamin’ Hot Cheetos taste test, Hazel reflects on the latest Beers with Talos with Azim, where they…
“Sorry, I can’t help with that”: How your guardrails might become the attacker’s best friend
In his first Threat Source newsletter, David Bianco explores the critical need for operational sovereignty in customizing AI guardrails to maintain the…
JavaScript obfuscation: From party trick to phishing kit
Learn the basics of what obfuscation is, why a researcher would try to reverse it, and several ways to approach the problem.
Choose your fighter: Balancing competing requirements to select models for your AI SOC
Selecting a model for your security operations center (SOC) and digital forensics and incident response (DFIR) tasks is important, but selecting the best…
The safety penalty: Reclaiming operational sovereignty in the age of AI
As frontier AI models become increasingly restrictive, security teams are facing a “safety penalty” that hampers real-time incident response. Discover how…
Is Cyber missing the Marque?
In this week’s newsletter, new author Mick Baccio introduces himself and explores the operational and security implications of the new White House…
UAT-10147 deploys SPECTRE: A cross-platform implant with Linux rootkit and BYOVD capabilities
The newly identified SPECTRE implant represents an evolution in commodity intrusion tooling, integrating cross-platform C2 operations, process injection,…
UAT-10147: Chinese-speaking adversary integrates agentic AI into post-compromise operations
Cisco Talos discovered a Chinese-speaking cybercrime group, tracked as UAT-10147, that targets a wide range of vulnerable web servers. This is an overview…
Describing attacks with crime script analysis
Martin explores how using crime script analysis to describe an attack with everyday language makes the situation accessible to non-technical audiences and…
Dissecting the JWR phishing framework
Cisco Talos recently identified an undocumented phishing framework, internally branded “JWR” by its developer, built to convincingly impersonate checkout…
Microsoft Patch Tuesday for August 2026 — Snort rules and prominent vulnerabilities
Microsoft has released its monthly security update for August 2026, which includes 421 vulnerabilities affecting a range of products, including 62 that…
Curiouser and Curiouser
In this edition of the Threat Source newsletter, William reflects on the “Make Hazel a Hacker” segment in Beers with Talos, and how cybersecurity is a…
Dissecting the JWR phishing framework
Cisco Talos recently identified an undocumented phishing framework, internally branded “JWR” by its developer, built to convincingly impersonate checkout…
Microsoft Patch Tuesday for August 2026 — Snort rules and prominent vulnerabilities
Microsoft has released its monthly security update for August 2026, which includes 421 vulnerabilities affecting a range of products, including 62 that…
Why metaphor may dictate your security strategy
In this week’s newsletter, Martin looks at how the metaphors we use to describe AI “escaping” its sandbox can completely change how we react to the threat.
“Keep going, bro. You’ve got this!” A data-driven look at how adversaries are weaponizing AI
Talos has collected prompt logs from threat actor endpoints running various applications, such as Claude Code, CodeX, Cursor, or Gemini. This blog is an…