Trick, treat, repeat
Thor gets into the Halloween spirit, sharing new CVE trends, a “treat” for European Windows 10 users, and a reminder that patching is your best defense against zombie vulnerabilities.
Dynamic binary instrumentation (DBI) with DynamoRio
Learn how to build your own dynamic binary instrumentation (DBI) tool with open-source DynamoRIO to enable malware analysis, security auditing, reverse engineering, and more.
Cybersecurity on a budget: Strategies for an economic downturn
This blog offers practical strategies, creative defenses, and talent management advice to help your business stay secure when every dollar counts.
Uncovering Qilin attack methods exposed through multiple cases
Cisco Talos investigated the Qilin ransomware group, uncovering its frequent attacks on the manufacturing sector, use of legitimate tools for credential theft and data exfiltration, and sophisticated methods for lateral movement, evasion, and persistence.
Think passwordless is too complicated? Let's clear that up
We’ve relied on passwords for years to protect our online accounts, but they’ve also become one of the easiest ways attackers get in. Cisco Duo helps clear up some of the biggest passwordless myths.
Strings in the maze: Finding hidden strengths and gaps in your team
In this week’s newsletter, Bill explores how open communication about your skills and experience can help your security team uncover hidden gaps, strengthen your defenses, and better prepare for ever-present threats.
IR Trends Q3 2025: ToolShell attacks dominate, highlighting criticality of segmentation and rapid response
Cisco Talos Incident Response observed a surge in attacks exploiting public-facing applications — mainly via ToolShell targeting SharePoint — for initial access, with post-exploitation phishing and evolving ransomware tactics also persisting this quarter.
Reducing abuse of Microsoft 365 Exchange Online’s Direct Send
Cisco Talos has observed increased activity by malicious actors leveraging Direct Send as part of phishing campaigns. Here's how to strengthen your defenses.
Ransomware attacks and how victims respond
This edition highlights the detailed studies that have been recently published on how ransomware attacks affect victims, from PTSD to burnout, and discusses ways to help deal with the fallout of victimization.