As cited
Copy frozen at (site build).
threat intel
Vishing campaign abuses Microsoft Teams to give attackers a foothold in company networks
Spring Ring, a coordinated voice-phishing campaign, exploited Microsoft Teams to impersonate IT support and deceived employees into installing malware or enabling remote access. Operating between January and April 2026, the campaign targeted over 150 employees across more than 10 organizations in various sectors by creating external Teams tenants designed to mimic legitimate internal IT accounts.
Why it matters: Security teams and employees need to recognize that Teams-based social engineering can bypass initial perimeter controls and grant attackers direct machine access, requiring verification procedures for all remote access requests regardless of platform or claimed source.
- Source published
- First seen by Cybersecurity Tracker
Source attribution
Correction
Correction recorded as of .
threat intel
Vishing campaign abuses Microsoft Teams to give attackers a foothold in company networks
Spring Ring, a coordinated voice-phishing campaign, exploited Microsoft Teams to impersonate IT support and deceived employees into installing malware or enabling remote access. Operating between January and April 2026, the campaign targeted over 150 employees across more than 10 organizations in various sectors by creating external Teams tenants designed to mimic legitimate internal IT accounts.
Why it matters: Security teams and employees need to recognize that Teams-based social engineering can bypass initial perimeter controls and grant attackers direct machine access, requiring verification procedures for all remote access requests regardless of platform or claimed source.
- Source published
- First seen by Cybersecurity Tracker