Security Insights
Latest threat analysis, industry news, and security best practices from our expert team.
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m365-security4 articles
Aug 1, 2026
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-...
mdrthreat-huntingendpoint-detection
SOC & MDRRead Now
Jul 30, 2026
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...
incident-responseransomwarebreach-response
Incident ResponseRead Now
Jul 18, 2026
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...
managed-socmdrsecurity-monitoring
SOC & MDRRead Now
Apr 22, 2026
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...
managed-socmdrsecurity-monitoring
SOC & MDRRead Now