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Cybersecurity researchers have disclosed details of four security flaws in Microsoft Teams that could have exposed users to serious impersonation and social engineering attacks
Microsoft said it has revamped the Internet Explorer (IE) mode in its Edge browser after receiving "credible reports" in August 2025 that unknown threat actors were abusing the backward compatibility feature to gain unauthorized access to users' devices
The threat actor known as EncryptHub is continuing to exploit a now-patched security flaw impacting Microsoft Windows to deliver malicious payloads
Multiple suspected Russia-linked threat actors are "aggressively" targeting individuals and organizations with ties to Ukraine and human rights with an aim to gain unauthorized access to Microsoft 365 accounts since early March 2025
Phishing attack exploits social engineering techniques alongside Microsoft Teams and remote access software to deploy BackConnect malware
A new social engineering campaign has leveraged Microsoft Teams as a way to facilitate the deployment of a known malware called DarkGate
Attackers Could Exploit Flaw to Relay Credentials, Compromise SystemsA critical vulnerability in Open Policy Agent could expose NTLM credentials from Windows systems, potentially affecting millions of users. Researchers at Tenable warn that attackers could exploit the flaw through social engineering. Users must update to version v0.68.0 immediately to mitigate risks.
Malicious attachments that exploit an RCE flaw from 2017 are propagating Agent Tesla via socially engineered emails and an evasive infection method.
The Computer Emergency Response Team of Ukraine (CERT-UA) has warned of a new wave of social engineering campaigns delivering IcedID malware and leveraging Zimbra exploits with the goal of stealing sensitive information