Over on Jensense, and interesting little tech tidbit popped up. It seems Norton Internet Security does not like Google’s new video advertisements, going so far as popping up a medium risk intrusion attempt alert.
This is bad, as some less tech savvy people will think that your site is trying to intrude on their computer, and might consider your site “blacklisted”, thus losing you readers, and potential revenue.
It seems to be only with a recent update that Norton Internet Security began blocking video ads with this intrusion attempt alert. While the video ads have been out for several months, it is only recently that these alerts began appearing to users viewing pages with AdSense video ads. However, AdSense could have changed something on there end in how these ads are shown within the iframe that is now resulting in these intrusion attempt alerts. If this is the case, hopefully AdSense will revert back once aware of the problem. If it is solely Symantec who is to blame, hopefully Google and Symantec can come to an arrangement where a future Norton Internet Security update will allow Google video ads to display without causing these alerts.
So for now, you might want to turn of image based advertisements, as that should stop any videos from being shown, and I have heard that text advertisements have better click rates anyways, as you can manipulate them to look more like your site, where image and video ads stand out screaming “I am an advertisement, click me!”, and thus your visitors will avoid it.