LONDON (AP) — Rupert Murdoch's daughter Elisabeth says Britain's phone-hacking scandal has prompted soul searching at News Corp. over how some behavior fell so short of the company's values.

In a speech at the Edinburgh International Television Festival, Elisabeth Murdoch said a major lessons from the last year — which rocked Britain's political establishment and shook her father's media empire — has been the need for "a rigorous set of values" governing institutions.

Murdoch acknowledged that given a "dearth of integrity" in so many news institutions, it could be difficult to argue for "the fierce protection of a free press."

Allegations that the News of the World, a now-closed Murdoch tabloid, hacked people's phones to get scoops broadened into a bigger scandal over the past year, prompting multiple investigations and dozens of arrests.