The Meta-owned image sharing platform added an option on Wednesday which shares locations using an Instagram map, similar to a feature rival Snapchat has offered since 2017.

Some users have since been shocked to discover that their location was being shared, viral posts have shown.

"Mine was turned on and my home address was showing for all of my followers to see," Instagram user Lindsey Bell wrote in reply to a warning posted by "Bachelor" reality television personality Kelley Flanagan to her 300,000 TikTok followers.

"Turned it off immediately once I knew but had me feeling absolutely sick about it."

In a TikTok video, Flanagan called Instagram's new location sharing feature "dangerous" and gave step-by-step instructions on how to make sure it is turned off.

Instagram chief Adam Mosseri fired off a post on Meta-owned Threads stressing that Instagram location sharing is off by default, meaning users need to opt in for it to be active.

"Quick Friend Map clarification, your location will only be shared if you decide to share it, and if you do, it can only be shared with a limited group of people you choose," Mosseri wrote.

"To start, location sharing is completely off."

The feature was added as a way for friends to better connect with one another, sharing posts from "cool spots," Instagram said in a blog post.

Users can be selective regarding who they share locations with, and can turn it off whenever they wish, according to Instagram.

Wariness regarding whether Instagram is watching out for user privacy comes just a week after a federal jury in San Francisco sided with women who accused Meta of exploiting health data gathered by the Flo app, which tracks menstruation and efforts to get pregnant.

A jury concluded that Meta used women's sensitive health data to better target money-making ads, according to law firm Labaton Keller Sucharow, which represented the plaintiffs.

Evidence at trial showed Meta was aware it was getting confidential health data from the third-party app, and that some employees appeared to mock the nature of the information, the law firm contended.

"This case was about more than just data -- it was about dignity, trust, and accountability," lead attorney Carol Villegas said in a blog post.

Damages in the suit have yet to be determined.

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