Blog

Cisco Talos Email Filtering provides reputation-verdict and categorization services in support of Cisco email security products. Multi-layered defenses protect customers from email threats, spam, and graymail. Talos Email Filtering examines URLs and file attachments contained in emails, as well as IP and Domain reputations of senders, to block malicious, unwanted, and inappropriate emails. The Talos research team has the experience of experts in over 40 languages to review and classify messages.

October 14, 2026 10:00

Break the silence: Kazakhstan-nexus UAT-6275 targets CIS government organizations

Talos and Recorded Future identified UAT-6275 activity targeting government organizations across the Commonwealth of Independent States. Recovered artifacts show additional interest in water resources and energy.

August 13, 2026 06:00

Dissecting the JWR phishing framework

Cisco Talos recently identified an undocumented phishing framework, internally branded "JWR" by its developer, built to convincingly impersonate checkout and login pages across major payment and shopping platforms.

April 7, 2026 06:00

The Trojan horse of cybercrime: Weaponizing SaaS notification pipelines

Cisco Talos has recently observed an increase in activity that is leveraging notification pipelines in popular collaboration platforms to deliver spam and phishing emails.

April 2, 2026 06:00

Qilin EDR killer infection chain

This blog provides an in-depth analysis of the malicious “msimg32.dll” used in Qilin ransomware attacks, which is a multi-stage infection chain targeting EDR systems.