Help files (.chm), disguised as fax report emails, are the latest trick cybercrooks are using to infect PCs with CryptoWall ransomware.

What steps do I need to take to change the default action on Windows XP and Windows 7 when someone tries to open a CHM file? I want the file extension to be associated with notepad.exe for ALL ...

It is said that it can open files in a wide range of formats, including DjVu, XPS , which is similar to PDF, and CHM , which is a Windows help file, so I actually tried using it to see what kind ...

A new version of the Masslogger trojan has been targeting Windows users - now using a compiled HTML (CHM) file format to start the infection chain.

A new email malware campaign hides a malicious payload in what appears to be a Microsoft Compiled HTML Help file.