I was on ebay a few minutes ago, trying to hit the "print shipping label" so I can send a recently sold item, and I received an "invalid certificate" notification through Safari. But when I checked, the certificate was valid until August 2015. Frightened about exposing my computer to a malicious site pretending to be the ebay postage page, I searched for this issue and came up with an ebay thread complaining about the same problem. Apparently it is a mac issue. You can read the thread here: http://community.ebay.com/t5/Technical-Issues/cant-purchase-on-ebay-using-safari/td-p/23860459 One comment in particular caught my attention To others using Apple products, I posted in another thread about a new malware specifically targeting Safari and Apple products (ALL of them), and so far the security updates do not protect us. In the meantime, I would use Firefox (FF) with your usual security ad-on's and NoScript, which WILL protect you against this new scripting malware, and no not use Flash unless you absolutely have to (you can turn it on/off). Until Apple releases a fix for this. I am not going to risk getting malware just to use Safari, and in talking with my Apple techs., they agree. Just a head's up to help protect you. My question is, is this valid advice and information? I have switched to firefox and installed NoScript, (after making sure it was a valid site) because I don't want to invite malware. My mom's pc has that problem already, and I don't want to infect a few month old computer. Obviously I'm not an "expert" so any comments and responses would be appreciated. Thanks!