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 JavaScript from a publicly published Google Sheets document and injecting it into the victim's browser session.
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 credentials-stealing operation using the Amatera stealer as the primary payload.
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 cover the full spectrum of what it takes to gather threat intel.
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.
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 that Microsoft marked as "critical."
“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 defender’s advantage.
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 one is more involved than you might think. Here's how to choose.
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 organizations can move toward operational sovereignty to ensure their defensive AI keeps pace with unconstrained adversaries.
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 memorandum regarding private sector participation in government-authorized offensive cyber operations.