For those of us that use WinZip (probably a lot of us)

http://www.eweek.com/article2/0,1759,1642408,00.asp

WinZip Computing Inc. recently revealed that Version 9.0 of its popular WinZip file compression program is vulnerable to a variety of security attacks. The company has released a "Service Release 1" to address the security problems.
The WinZip advisory states that "a number of general internal improvements have been made to the WinZip program to enhance security and reliability." According to the company, the vulnerabilities were found in the course of an internal review and there is no report that any of the problems have been exploited.
Just goes to show that everything can be exploited...