Mac computers do get viruses and they do crash! I see at least 2 Mac computers a week that need to be repaired and Viruses removed from them. Also, If you have an Ipad and are storing pictures on them. Make sure you do a back up to the cloud or to a Pc/ Mac computer. For Mac user's, make sure you have a time machine in place at all times. If you have a an Iphone do the same back it up to the cloud or better yet, back it up to a local PC or Mac.