Intego highlights important update for Safari browser as follows:

http://www.intego.com/mac-security-blog/safari-6-1-improves-web-browser-security/

http://support.apple.com/kb/HT6000

QUOTE: Apple has released Safari 6.1 with patches for 21 vulnerabilities to improve its web browser security. The Safari update addresses a number of Webkit flaws that may lead to information disclosure and cross-site scripting attacks, as well as a Safari vulnerability related to arbitrary code execution.