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The Register
You didn't really want to be sending around .msix and .msixbundle files, did you?
Bleeping Computer
Microsoft recently revealed that it's currently enhancing protection against dangerous file types and malicious URLs in Teams chats and channels. [...]
Bleeping Computer
ZDNet Security
Careful when you click: Cyber criminals are hiding malicious payload to make it more difficult for users - and anti-virus software - to detect.
The Hacker News
Google has announced that it's open-sourcing Magika, an artificial intelligence (AI)-powered tool to identify file types, to help defenders accurately detect binary and textual file types. "Magika outperforms conventional file identification methods providing an overall 30% accuracy boost and up to 95% higher precision on traditionally hard to identify, but potentially problematic content
The Hacker News
The threat actors behind the nascent Buhti ransomware have eschewed their custom payload in favor of leaked LockBit and Babuk ransomware families to strike Windows and Linux systems. "While the group doesn't develop its own ransomware, it does utilize what appears to be one custom-developed tool, an information stealer designed to search for and archive specified file types," Symantec said in a
Bleeping Computer
Bleeping Computer
Smart App Control, a Windows 11 security feature that blocks threats at the process level, now comes with support for blocking several new file types threat actors have recently adopted to infect targets with malware in phishing attacks. [...]
Bleeping Computer
Hackers who normally distributed malware via phishing attachments with malicious macros gradually changed tactics after Microsoft Office began blocking them by default, switching to new file types such as ISO, RAR, and Windows Shortcut (LNK) attachments. [...]