This is what I term "Professional Paranoia" and as long as you can be unemotional about it, it can be an exceptionally useful mindset. I have internalized the Moscow Rules[1] and I constantly remind myself of what Bruce Lee said, "Be like water".
At times I have heard suggestions that I should start a blog, but then I'd be closer to being a public figure and more at risk.
Again, if my business is successful, then I will be less anonymous and sometimes have to hold my tongue!