For HTTPS, will connection made to different subdomain in page iframe generate warnings?

Posted by Erik Hermansen on Stack Overflow See other posts from Stack Overflow or by Erik Hermansen
Published on 2010-04-08T19:30:43Z Indexed on 2010/04/08 19:33 UTC
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web-development

If you have a web page served from https://mydumbwebsite.com, and it has an iframe in it that serves from https://subdomain.mydumbwebsite.com, should I expect a significant number of browsers (like >1% of the current browsers in use) to show a security warning?

Please don't guess at this. I would like an answer based on real-world experience, if possible.

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