The chief executive of NetSafe, Martin Cocker, says the Law Commission's recommendation to protect people who have unwanted personal information put online by others is clearly needed.
Anyone who uploads images such as naked photos of an ex-partner is protected at present by an exemption in the Privacy Act for information held in connection with a person's personal affairs.
The commission recommended that this exemption should not apply when the information or its disclosure would be "highly offensive".
Mr Cocker said the unwanted publication of personal information was a challenge of the digital age, and the Privacy Act was ill-equipped to deal with it.
"It's an area we clearly need to update, because you shouldn't have the right to breach someone's privacy just because they were once your partner."