Mr McCormack also threatened "further and tougher" anti-trespass measures if activists continued to target farmers.

On Tuesday, the Office of the Australian Information Commissioner (OAIC) announced it was investigating 'Aussie Farms Inc' under the Privacy Act 1988.

The investigation could see the Aussie Farms website taken down by court order, which is an outcome that Riverina farmers have been calling for since January.

The announcement came one day after Aussie Farms lost its federal charity status and related tax breaks.

"I welcome the OAIC's investigation into Aussie Farms Inc and I will await the outcome of this investigation," Mr McCormack told The Daily Advertiser.

"I am also pleased the Australian Charities and Not-for-profits Commission took the common-sense approach to revoking the charity status of this group.

"Aussie Farms Inc has, by its actions, caused people to willfully enter property to disrupt the lives and livelihoods of hard-working farmers already suffering through the drought."

Aussie Farms has been contacted for comment.

Aussie Farms online map includes dozens of livestock farms in the Riverina, including in aquaculture and racehorse breeding.

The website has the ability to host images and videos taken by activists, leading to allegations from MPs and farming groups that Aussie Farms was encouraging property invasions and spying on farm operations.

In a brief statement, the OAIC said "Section 40(2) of the Privacy Act authorises the Commissioner to investigate an act or practice that may be an interference with the privacy of an individual or a breach of the Australian Privacy Principles".

"The investigation follows preliminary inquiries into the collection of personal information by Aussie Farms and its notification practices.

"In line with the OAIC's Privacy regulatory action policy, no further comment will be made while the investigation is ongoing."

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Mr McCormack said farm trespass by activists "needed to be stopped".

"We want farmers and people who are working in agriculture to be able to do so in an environment which is safe, which has been what they've always been used to," he said.

"We don't want this illegal activism affecting the lives and livelihoods of those people who are trying to grow our food and fibre.

"The federal government has taken action and passed laws earlier this year which make it an offence to incite farm invasions.

"If these people look at ways and means of creating activism that is going to see people invading farms then we will look at ways to go a bit further and tougher."

Aussie Farms has described itself as "dedicated to ending commercialised animal abuse and exploitation in Australian animal agriculture facilities by increasing industry transparency and educating the public about modern farming and slaughtering practices"

Mr McCormack said Australia already had regulations to prevent animal cruelty.

"The vast majority of primary producers do the right thing regarding the treatment of animals and those who are responsible for any mistreatment of animals will be caught and will feel the full force of the law," he said.