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MO is dont install anything that you are unsure of its whereabouts or developer. looks to be a very simple example of malware.

the user will have to click the widget each time to send a screenshot and each time the receiver probably wont get any useful information. if it appears the widget doesnt do anything the local user will probably just delete the widget.
 
well as i always used to say, most of the times there has to be an ignorant user to help a nasty program to harm his computer, but after understanding this article, think about a user uploading such a widget in apple's website. Its very easy to trust widgets hosted on apple's website. What im not sure about though, is if apple checks the code of the widgets it hosts or not...
 
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