Ryan is the network administrator for Hammerstein Incorporated, a sign manufacturing company in Chicago. Ryan holds certificates for certified ethical hacker and certified hacking forensics investigator. Ryan prefers to use Linux-based operating systems, but has to work on Windows computers for much of his work-related duties. Ryan also prefers to use Netscape Navigator on his Windows computers because he believes it is more secure than Internet Explorer. While reading a security-related article online one day, he reads that Netscape Navigator has an issue with improperly validating SSL sessions which worries him greatly. What add-on provided for Netscape Navigator could Ryan install that would allevia te this issue of not properly validating SSL sessions?