7 facts about sandbox attribute • HTML5 iFrame
Learn three facts about the iframe sandbox attribute. What HTML5 IFrame tag is and how you can use the sandbox attribute.
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Learn three facts about the iFrame sandbox attribute. What HTML5 iFrame tag is and how you can use the sandbox attribute.
Inline Frame allows embedding interactive documents and content from different sources. In advertising, IFrames are used to embed tracking pixels to count user impressions or visits.
Unfortunately, iFrames are very often used by attackers to extract user information from the website or inject different vulnerabilities like malware.
Sandbox attribute allows restricting access to the iFrame content and what iFrame contents is allowed to access website content.
When the sandbox attribute is added to the iFrame tag, by default it will:
We can reduce the restrictions mentioned above by adding additional parameters to the used sandbox attributes:
Yes, except Opera Mini.
To make sure 3rd party resources embedded on your website have restricted or limited access to the website resources.
If a browser or iFrame scripts try to execute or access restricted resources, you can find this information in the console log.
Chrome plugins have an option to be injected into all iFrames on the currently loaded page. Plugin configuration manifest file defines this behavior.
Some plugins like LastPass require access to iFrames content to check, for example, if no form needs filling login and password.
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