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Hackers Attack Employees Over Microsoft Teams to Trick Them Into Granting Remote Access

Cybersecuritynews •Guru Baran • March 10, 2026

A social-engineering campaign abusing Microsoft Teams and Windows Quick Assist is evolving again, with BlueVoyant warning that the attackers are now deploying a newly identified malware family called A0Backdoor after convincing employees to hand over remote access. The activity overlaps with tactics previously tied to Blitz Brigantine, also tracked as Storm-1811, a financially motivated cluster […]

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This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.

Social Engineering Attack via Microsoft Teams Deploys A0Backdoor Malware Hackers are targeting employees in financial and healthcare sectors through Microsoft Teams, using social engineering tactics to gain remote access via Windows Quick Assist. The attackers deploy a new malware family called A0Backdoor after convincing employees they are IT staff assisting with spam messages. This campaign is linked to the financially motivated group Blitz Brigantine. 15 sources 55

Extracted Entities

Hackers Attack Employees Over Microsoft Teams to Trick Them Into Granting Remote Access

The full story

Extracted Entities

APT Groups (2)

Attack Types (2)

Malware (1)

MITRE ATT&CK (1)

Platforms (1)

Tools (2)