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abort-on-iframe-property-write

The abort-on-iframe-property-write snippet patches a list of properties on the iframe's window object that aborts execution when the property is written. 
You can use this snippet to prevent CV providers from overwriting properties inside an iframe.
Parameters
Name
Description
Mandatory
properties
The list with the targeted properties to abort.
Yes
Filter examples
The following table lists examples that use the abort-on-iframe-property-write snippet:
Filter
Result
abort-on-iframe-property-write atob
The code that sets the atob function inside an iframe throws an exception.
abort-on-iframe-property-write atob btoa
The code that sets the atob or btoa function inside an iframe throws an exception. 
abort-on-iframe-property-write adHandler.cmd.push 
The code that sets the push function throws an exception. 

This function is a property of cmd, which is a property of the adHandler global object. 
abort-on-iframe-property-write Object.prototype.adfoxCode
The code that sets the adfoxCode property throws an exception. 

This example shows that you can attach the filter to prototype iframe properties as well.
Debugging
The following table contains messages you'll find useful during debugging:
Message
When the error occurs
Definition
no property to abort on write
At the beginning of snippet execution
No property parameter was passed to the snippet.
setting <property> aborted
Each time the property is set, right before throwing the error
The error is about to be thrown.
aborting when setting <property>
Right before attaching to the property
This log is printed just before the snippet takes over the property getter OR setter.

Name	Description	Mandatory
properties	The list with the targeted properties to abort.	Yes

Filter	Result
`abort-on-iframe-property-write atob`	The code that sets the `atob` function inside an iframe throws an exception.
`abort-on-iframe-property-write atob btoa`	The code that sets the `atob` or `btoa` function inside an iframe throws an exception.
`abort-on-iframe-property-write adHandler.cmd.push`	The code that sets the `push` function throws an exception. This function is a property of `cmd`, which is a property of the `adHandler` global object.
`abort-on-iframe-property-write Object.prototype.adfoxCode`	The code that sets the `adfoxCode` property throws an exception. This example shows that you can attach the filter to `prototype` iframe properties as well.

Message	When the error occurs	Definition
`no property to abort on write`	At the beginning of snippet execution	No `property` parameter was passed to the snippet.
`setting <property> aborted`	Each time the property is set, right before throwing the error	The error is about to be thrown.
`aborting when setting <property>`	Right before attaching to the property	This log is printed just before the snippet takes over the property getter OR setter.

Last modified 8mo ago