Cisco Umbrella Blog

Cybersecurity Research

Ransomware and the "Dark Web"

Cisco Security Report: Majority of Orgs Do Not Monitor DNS

C is for Python

The Avalanche Project: When High Frequency Trading Meets Traffic Classification

Log Analysis with OpenDNS

Phishing, Spiking, and Bad Hosting

How Hacking Team Helped Italian Special Operations Group with BGP Routing Hijack

Which providers have the most phishing content?

Spikes and Query Patterns

Elasticsearch: You Know, For Logs [Part 4]