There’s a lot of noise out there about LinkedIn profiles, from whether to have one or not, to what to include and what not to include.
Most importantly, yes, having a profile is a good thing. Even if you are restricted by what you can say online, having one shows you dabble in social media and value networking. If you do not have one, human resources professionals and recruiters may wonder why not, and it could hurt you.
There’s a little-known LinkedIn feature that allows you to decide whether or not your network will receive notifications of your profile updates. You can turn it off so your employer doesn’t suspect that you're looking for a new job.