Security Insights
Latest threat analysis, industry news, and security best practices from our expert team.
Global Phishing-as-a-Service Takedown: Defending Against Industrial-Scale Social Engineering After 1 Billion Malicious Messages
Introduction Law enforcement agencies and private-sector partners have disrupted one of the largest cybercriminal ecosystems ever measured: ...
Storm-2945 'CaptiveCrunch': Hotel Wi-Fi DNS Hijacking and M365 Token Theft Defense
Storm-2945 'CaptiveCrunch': Hotel Wi-Fi DNS Hijacking and M365 Token Theft Defense Introduction Since early May 2026, a sophisticated cyber-...
Defending Against Microsoft Teams Vishing and Chaos Ransomware
Defending Against Microsoft Teams Vishing and Chaos Ransomware Introduction Security Arsenal has tracked a concerning shift in the threat la...
ACR Stealer & ClickFix: Detecting Browser Token Theft and M365 Data Exfiltration
Introduction Defenders are currently facing a renewed and highly effective infection chain using "ClickFix" social engineering to deploy the...
Microsoft Teams Helpdesk Impersonation: Detecting External Access Abuse
Introduction Security teams must immediately shift focus to the collaboration layer. Microsoft has issued a warning confirming that threat a...