The next major version of Adobe Reader, Adobe X, slated to be released next month, will include a new security feature designed to mitigate attacks against the popular PDF software, Adobe announced on Monday. The new capability, called “Protected Mode,” will force all operations that display PDF files to the user to be run inside a highly confined environment, known as a sandbox, in which certain functions are prohibited. The new functionality will help prevent attackers from being able to write files, change registry keys or install malware on an individual's computer, Adobe has said. Malicious code inside PDF files will be contained inside the Reader sandbox, instead of being installed on a user's system. — AM