A lot of grayware has upgrade capabilities. It frequently downloads and runs new programs without the users' knowledge. Newly downloaded program may be new grayware, even malware. This is a threat to the system.
Even if publicizing Web-based malware attacks wouldn't actively prevent identity, it might shame site owners into patching their vulnerabilities, suggests SANS Web security researcher Johannes Ullrich.
Its sandbox was found to be the strictest, while Accuvant says that Internet Explorer allowed hackers some file-reading capabilities even as it prevented them from installing malware.