Nicely expanded on in this New Statesman piece.
In summary, they are:
Myth 1: That it is only celebrities and politicians who suffer at the hands of popular papers.
Myth 2: That egregious abuses of privacy happened only at the News of the World.
Myth 3: That in attempting to deal with the abuses of some sections of the press you risk throwing the baby out with the bathwater.
Myth 4: That any attempt to regulate the press means we are heading for Zimbabwe.
Myth 5: That current privacy law under the Human Rights Act muzzles the press.
Myth 6: That judges always find against the press.
Myth 7: Privacy can only ever be a rich man’s toy.
Myth 8: That most sex exposes carry a public interest defence.
Myth 9: That people like me want to be in the papers, and need them, and therefore our objections to privacy intrusions are hypocritical.
Myth 10: That the tabloid press hacks are just loveable rogues.