Any ideas on how to deal with this? 
How does desktop deals with it? (On iOS we can't close the Tab without tapping the alert)
This could be part of our current system for suppressing repeated alerts?

I hope pink and Rohit could weigh in

This looks like alert DOS attack which Kurt recently fixed.  murali.ebox@, which version of Chrome do you use (you can check by loading about:version URL)

I'm not sure what specifically is bothering murali.ebox here.  If the issue is that the alert is being shown in a loop, then the dialog blocking option should fix that problem.  However, from the wording of the original report, it seems the the bug is that only the OK button is shown, and there's no way to dismiss the dialog that doesn't tell the page "OK".  However, if a spammy page is able to present a JavaScript alert, then tapping OK does not actually grant it any further permissions (i.e. tapping OK is equivalent to cancelling the alert).

Sorry for the delay, 
   First of all, the issue is happening in iOS,  Chrome browser , on my iPad, browser is having up to date

Issue : when that dialog box shows up, other part of the screen is in-active,  cannot close tabs, none of the tabs are responding, during the issue only responding area is that message box .

I tried to see if it happens on iPad safafi, same dialog box showing in safari, but safari allow to close the tab, in chrome that problem tab is not closing 

     Let me know if you need any info.

Thank you
Murali

Fixed by adding "Block Dialog" button to the alert

Thank you So much for kindly considering it and resolving it.


Thank you
Murali


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Thank you
Murali