Twitter said that tweeting such images can violate someone’s privacy and potentially lead to harm against them.

But implementing this policy will be a massive challenge.

There’s still confusion about who Twitter’s new policy covers.

Three friends sitting outside, all using smartphones.

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“What will make a person someone of public interest?

But only time will tell.”

More Privacy Needed

Twitter isn’t the only social media service trying to increase privacy.

A child sitting in front of a window at sunset over a big city concentrating on a tablet computer.

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Privacy advocates say social media services need to do more to protect users' privacy.

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More rules could have the paradoxical effect of hurting users, some observers say.