It is certainly normal to do so, and failing to will raise some eyebrows, possibly cost you an opportunity. There certainly isn't currently a standard way to mark this on your CV/resume.
Personally, I've had one decent resume that said "Disclosure on interview" in place of the company name. It was pretty obvious to me that they didn't want to risk an agent accidentally spreading the word to his boss that he was leaving, so I interviewed him and asked him then.
But, I later found out, someone else in a different department had rejected his resume on that detail alone. So, I guess it depends a lot on who is reading your resume.
Sad thing is that I also can't advise you not to worry about it. I've seen cases where agents have sent a resume to the boss of the candidate. And there's very little recourse (in any country I'm aware of) if they should do so.
But I will say that putting a dummy (real or otherwise) company name in there, is going to increase your chance of interview, but also increase the chances of such an accident happening. Plus, you're likely to get rejected for lying, once the truth comes out, anyway.