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Ransomware Exploits Trust in Collaboration Tools for Initial Access

Ransomware Exploits Trust in Collaboration Tools for Initial Access

First seen 13 Oct 2026, 13:29 UTC • •
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ThreatCluster AI
ThreatCluster •October 13, 2026 at 15:32 UTC
  • •Ransomware now primarily enters through collaboration tools like Microsoft Teams.
  • •Attackers impersonate IT support to gain remote access, complicating detection.
  • •Proactive threat hunting is essential for MSSPs to combat evolving ransomware tactics.

In 2026, ransomware attacks have shifted from traditional methods to exploiting collaboration platforms like Microsoft Teams. Attackers use spam emails to confuse victims before impersonating IT support to gain remote access. This method has been documented by ThreatLabz, which tracked three distinct initial access brokers using this tactic. The brokers deployed various malware, including a custom family called GoGRPC and a Java-based remote access trojan. The attack method targets employees in finance, sales, and operations, making it particularly dangerous. The shift in attack vectors expands the attack surface, complicating defense efforts. MSSPs are urged to enhance threat hunting capabilities to identify such threats proactively. Recent research highlights the urgency of addressing these evolving tactics.

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Timeline

2026-10-08
Zscaler reports new ransomware tactics
Ransomware is now exploiting collaboration tools for initial access, with a focus on Microsoft Teams impersonation.
Zscaler
2026-10-13
Hackread discusses MSSP response
MSSPs are advised to enhance threat hunting capabilities to identify ransomware threats proactively.
Hackread

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Common questions

How are attackers gaining access?
Attackers are impersonating IT support via Microsoft Teams after confusing victims with spam emails.
What types of malware are being used?
Different brokers are deploying various malware, including GoGRPC and Java-based remote access trojans.
What should MSSPs do to improve security?
MSSPs should enhance their threat hunting capabilities to proactively identify and mitigate emerging ransomware threats.