What are ZIP or ISO attachment attacks?

Archive attacks use ZIP, ISO, or similar containers to deliver **malware** while evading security scanning. Some scanners struggle with nested archives, password-protected files, or less common formats.

ISO files are particularly effective because they can be mounted as virtual drives, bypassing Mark-of-the-Web protections that would otherwise warn about internet-sourced files.

Attack technique: email delivers archive claiming to contain invoice or document, user extracts and opens contents, **malware** executes. Password-protected archives are especially problematic as passwords prevent automated scanning.