Re: Req for feedback? Add attribute to elements to defeat clickjacking

David Lindsay wrote, On 07/06/2011 19.33:
> Also, there can be ui-redressing problems when everything on a page
> gets overlaid *except* the click-target element.

This can be handled by enforcing visibility of a reasonably sized area of the
owner document, centered on the click element (again, that's what ClearClick
-- G

> On Tue, Jun 7, 2011 at 12:36, Michal Zalewski <> wrote:
>>> <style>
>>> #buyButton:hover{
>>>    visibility: forced;/* or something else, I don't know.. */
>>> }
>>> </style>
>>> <button id="buyButton">Click here to purchase server for $500.00.</button>
>> I see two potential problems here:
>> 1) What do you do when you have two overlapping "always on top"
>> elements? You can only render one.
>> 2) What if the button is visible (and therefore interactive), but only
>> for a very short period of time before a premeditated click (not
>> enough to give the user a chance to respond)?
>> In general, I had the impression that vendors were very unhappy about
>> implementing any solutions to clickjacking that would involve
>> determining the actual on-screen visibility of a rendered element,
>> because that can be complicated in some settings (my proposal in 2008
>> was shot down on these grounds).
>> /mz

Received on Tuesday, 7 June 2011 17:44:11 UTC