So if you want to get into a new field that is sure to be big and pretty exciting for the next couple of years then you should look into the security aspect of the new smartphone market. You will be right on the cutting edge and learning something new all of the time.
Just because you are using text messaging and not email, you are not free and clear from the problems that email has. You still have to worry about rogue URL links and people trying phishing attacks on you. So this just goes to show that no matter what technology you are going to use you still always have to remember to be safe.