Since you haven't found your identity has been stolen, I suggest that you go to one of these bureaus’s web site and buy their service. Some service can send you emails whenever somebody request your credit report and also whenever anything happens in your credit report. Don't cost much each year so you can closely watch your credit history. If you found that unusual things happened, you can write to them to alter identity theft. Write to one of them should affect all three but I would write to three of them for sure. You can write to them now if you are so worried but that might give you some inconvenient when you do your business.