Some users of iMessage report being swamped with messages, which is possible because Apple is no limit set on the number of posts in quick succession is sent. Also crashes the Messages app on iOS by a torrent of large and complex messages.
Some users would have thousands of messages to deal with, and also there were complex messages with a lot of unicode characters, and large messages are sent to the Messages app to crash. The send is done probably through a simple AppleScript in the Messages applications on OS X, writes The Next Web. Currently, there are still only a handful of iOS developers, who are flooded with the messages, but according to the site, which is the method simple to implement and difficult to stop.
It is not possible for a sender to block in iMessage, there would be no limit on the amount of messages in quick succession can be sent and also the further spam-detection of Apple is still insufficient. Also, by linking iOS since the last version, a phone number and address. “If they have a telephone number, it is likely that your iMessage in the need to completely shut down, because this song is hard to adjust,” writes The Next Web. One of the victims knew the attack to be traced back to a Twitter account that is used by someone that piracy of App Store apps to facilitate. With a lot of messaging services are or were similar denial-of-service attacks possible, as in the past with Facebook Chat and MSN.