double extension attacks

Double extension attacks are a common malware technique where attackers hide the true file type by adding a second, misleading extension. On Windows, the default setting to hide known file extensions makes users vulnerable, as a file named 'invoice.pdf.exe' appears as 'invoice.pdf'. This tag covers discussions on how showing file extensions in Windows enhances security and stops such malware tricks. The content emphasizes that enabling the display of full file extensions is a simple yet effective defense against these attacks, helping users identify suspicious files before opening them.