
Hackers use Microsoft Teams messages and calls to gain remote access
Attackers impersonate IT support via Teams to approve Quick Assist sessions and abuse AD CS for privileged account access.
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Attackers impersonate IT support via Teams to approve Quick Assist sessions and abuse AD CS for privileged account access.

Attackers use social engineering via Microsoft Teams and insecure AD CS to steal company data.

Two Microsoft-disclosed intrusions used Quick Assist plus ESC1 or ESC8, then DCSync and Rclone in one case.

Two unattributed intrusions used Quick Assist; one reached DCSync and exfiltration after a privileged identity was excluded from containment.

A 2026 PKI ranking puts DigiCert first, ahead of Keyfactor and Venafi, citing 47-day TLS lifetimes.

CISA and five international agencies publish joint guidance detailing 17 techniques attackers use to compromise Microsoft Active Directory environments.
A write-up demonstrates privilege escalation from an IIS AppPool identity to NT AUTHORITY/SYSTEM via the AD CS RPC endpoint.
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