The former News International chief executive added that her thoughts were with former colleagues who face future trials.
Flanked by her husband Charlie, Rebekah Brooks spoke for the first time since she was cleared of phone hacking charges and said she felt "vindicated by the unanimous verdicts."
ITV News' correspondent Emily Morgan reports:
The father of a July 7 bombings victim told ITV News he was taken "back to that time" when he was told his phone may have been hacked.
Sienna Miller has exclusively told ITV News that being a victim of phone hacking damaged her "personally", her relationships and her career.