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Validating iframes

validating iframes-46

Just another one of those things that shows that those developing HTML 5 do not understand what standards are (after all they have decided not to follow the document markup standards in defining their new language when one of the most significant changes in HTML 2 was that it was redefined to follow the SGML standards for how to define a markup language).

validating iframes-61

Chances are that either the API is not available or the VAT number you have is not an intra-community one: Since we rely on VIES to validate VAT numbers and are legally obligated to do so, at times VAT validation fails if the API is not available.If you do not have an email in your spam email, you may request a new activation email.You may also validate your account by logging in through a valid social network which is tied to the same email address as your Glassdoor account (Google Plus or Facebook).Once IE8 dies then the standard way using the object tag will be just as simple to use as the using a non-standard iframe tag.(Note that the browsers that don't support using the object tag fully also don't support HTML 5 so the iframe tag being added in HTML 5 means that it will become part of the standard long after it has ceased to serve any useful purpose). The attribute is apparently part of Mozilla's recent Full Screen API project, which they're designing as a new standard and allows framed content to use full-screen functionality.You can control the border in IE6 but it has to be done from within the page being included and not from the page that it is included in.

Using a transitional doctype and an iframe works around these difficulties for the moment.

Another website embedding an iframe with the API key wouldn't be able to control the referrer of its users.

So if your goal is to prevent sites from being able to clone API keys, then the referrer check will generally work.

My understanding is that one popular approach is to embed an API key into the resource, e.g.: When the server receives a request from client, it does a lookup on the referrer to ensure that the site requesting the resource is allowed to access it.

My question is as follows: can't referres be spoofed and wouldn't this make it trivial to circumvent this system? Referrers can be spoofed, but only by the user-agent.

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