I think it's everybody. But in fact, as 237SJ implies, the only people likely to be prosecuted would be the media. If you put something on t'internet identifying somebody in these circumstances then yes, you could be thought of as being part of the media. Whether they'd do it in the circumstances you describe, however, is another matter.
In the Ryan Giggs case, for example, if memory serves me correctly, before the restriction was lifted the moderators on here removed a couple of posts that named him, for fear of prosecution.