Security Insights
Latest threat analysis, industry news, and security best practices from our expert team.
Microsoft Teams External Chat Exploited for Breaches in Under 15 Minutes — SOC Detection and Hardening Guide
Arctic Wolf has issued an urgent warning regarding a rapidly escalating threat vector: attackers are abusing Microsoft Teams External Chat t...
Microsoft Teams IT Support Scams: Detecting and Blocking External Chat Social Engineering Attacks
Microsoft Teams IT Support Scams: Detecting and Blocking External Chat Social Engineering Attacks Introduction Cybersecurity researchers hav...
Microsoft Teams AI Social Engineering Detection (November 2026): What Defenders Must Do Before and After Rollout
Introduction Microsoft has announced that starting in early November 2026, Teams will gain AI-powered, context-aware social engineering dete...
Microsoft Teams and Outlook Launch Failures on Windows ARM Devices After August 2026 Patch Tuesday — Detection, Validation, and Remediation Guide
Introduction Microsoft has resolved a regression introduced by updates released since the August 2026 Patch Tuesday cycle that prevented Mic...
Microsoft Teams Desktop Client Fails to Launch on Windows: Availability Incident Response and Defender Playbook
Microsoft has confirmed an active known issue causing delays — and in some cases outright failures — when users attempt to open the Microsof...
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...
Defending Against EtherRAT: Detecting Fake Microsoft Teams IT Support Calls
Defending Against EtherRAT: Detecting Fake Microsoft Teams IT Support Calls Introduction Security Arsenal is tracking a sophisticated social...
Slack and Teams Threat Detection: Addressing the SOC Visibility Gap
Introduction The perimeter has dissolved, and for many organizations, the new frontline is the chat window. While email security stacks have...
DragonForce Ransomware: Detecting Microsoft Teams C2 Abuse and Go-Based Access Tools
Introduction The threat landscape has evolved once again with the confirmation that the DragonForce ransomware operation is actively abusing...