Facebook is also facing regulatory action, with Britain's information commissioner saying on Tuesday she is using all her legal powers to investigate the handling of millions of people's personal Facebook data by the social media giant and by political campaign consultants Cambridge Analytica.
Advertising executive Paul Catmur earlier this week told the Herald the data practices employed by Cambridge Analytica were commonplace among data firms working in marketing.
"They're selling baked beans like they're selling politicians," said Catmur, who works as the chief executive at Barnes, Catmur & Friends Dentsu.
"What Cambridge Analytica did for the Trump campaign seems currently no different to what they or a number of similar firms do for commercial clients. Nobody currently seems too upset about the use of psychographic methods to sell toothpaste, but they are up in arms to see it used to manipulate support for a right-wing president."
There have also been calls for data laws in New Zealand to evolve to better protect consumers.
Barry Brailey, a cybersecurity specialist at Aura Information Security, would welcome the introduction of similar laws in this market.
"When someone else holds something of yours that is valuable, they have a duty to look after it," says Brailey.
"They also have a duty to let you know if something happens to it – and that's really what notification laws codify."
