New Text Bomb Alert

https://techcrunch.com/2018/02/15/iphone-text-bomb-ios-mac-crash-apple/
http://www.dailymail.co.uk/sciencetech/article-5396271/Indian-character-crash-iPhones-latest-text-bomb-bug.html
There seems to be very little advice as to how to avoid the problem an earlier version having been reported in January this year. I am not clear whether the message has to be opened for the device to be affected or if simply receiving a message can have an impact.
Peter