Microsoft Teams phishing targets employees with A0Backdoor malware

Hackers contacted employees at financial and healthcare organizations over Microsoft Teams to trick them into granting remote ...

Hackers Pose as IT Staff in Microsoft Teams to Install Malware

Hackers are impersonating IT staff in Microsoft Teams to trick employees into installing malware, giving attackers stealthy ...
Morning Overview on MSN

New Windows malware mimics signed apps to slip onto PCs

A strain of Windows malware is exploiting a deceptively simple trick to bypass antivirus software: it disguises itself as a legitimately signed application, making it nearly invisible to standard ...
Homeland Security Today

CISA Releases Malware Analysis Report Associated with Microsoft SharePoint Vulnerabilities

CISA has published a Malware Analysis Report (MAR) with analysis and associated detection signatures on files related to Microsoft SharePoint vulnerabilities, according to a press release yesterday.
Windows Report

Attackers Impersonate IT Support on Microsoft Teams to Deploy A0Backdoor Malware

Hackers abused Microsoft Teams and Quick Assist to deploy A0Backdoor malware at financial and healthcare organizations, researchers warn.

Microsoft: Hackers abuse OAuth error flows to spread malware

Hackers are abusing the legitimate OAuth redirection mechanism to bypass phishing protections in email and browsers to take ...

Microsoft warns of new signed malware which deploys remote monitoring tools as backdoors

TrustConnect is back, this time used to deploy legitimate but weaponized RMM solutions.
JD Supra

CISA Releases Malware Analysis Report for Microsoft SharePoint Vulnerabilities

Threat actors continue to exploit ToolShell to gain unauthorized access to on-premises SharePoint servers. On August 6, 2025, the Cybersecurity and Infrastructure Security Agency (CISA) released a ...