Ukrainian DDoS Attacks Should Put US on Notice–Researchers

On Tuesday, institutions central to Ukraine’s military and economy were hit with a wave of denial-of-service DoS attacks, which sparked an avalanche of headlines around the world. The strike itself had limited impact — but the larger implications for critical infrastructure beyond the Ukraine are...

Ransomware Affiliate Arrested in Romania; 51 Stolen Data Brokers Arrested in Ukraine

Europol, the European Union's premier law enforcement agency, has announced the arrest of a third Romanian national for his role as a ransomware affiliate suspected of hacking high-profile organizations and companies and stealing large volumes of sensitive data. The 41-year-old unnamed individual...

European Authorities Disrupt Emotet — World's Most Dangerous Malware

Law enforcement agencies from as many as eight countries dismantled the infrastructure of Emotet, a notorious email-based Windows malware behind several botnet-driven spam campaigns and ransomware attacks over the past decade. The coordinated takedown of the botnet on Tuesday — dubbed "Operation...

COINHOARDER: Tracking a Ukrainian Bitcoin Phishing Ring DNS Style

This post is authored by Jeremiah O'Connor and Dave Maynor with contributions from Artsiom Holub and Austin McBride. Executive Summary Cisco has been tracking a bitcoin theft campaign for over 6 months. The campaign was discovered internally and researched with the aid of an intelligence sharing...