Greta Thunberg says she had to hire a security entourage after Donald Trump tweeted about her

Greta Thunberg says she was forced to hire bodyguards after then-US President Donald Trump mocked her on social media when she won Time's Person of the Year in 2019.

The Swedish environmental activist, who was just 17 at the time, received an unrelenting barrage of death threats in the wake of Trump's tweet.

Trump tweeted: "She seems like a very happy young girl looking forward to a bright and wonderful future. So nice to see!"

Thunberg fired back at the time by changing her Twitter biography to: "A very happy young girl looking forward to a bright and wonderful future."

Donald Trump/Twitter.

But, behind the scenes, life seemed a little shaky.

Thunberg has told The Times that she hired a security guard entourage due to the overwhelming number of threats against her life and intense media scrutiny.

Thankfully, she only needed it for a few days.

But the teenager got her own swipe in when Trump was unceremoniously booted from the White House in 2021.

She tweeted: "He seems like a very happy old man, looking forward to a bright and wonderful future. So nice to see!"

Per Grunditz / Alamy

While some of us were skipping school to smoke cigarettes behind the bike shed or swig vodka Cruisers in the local park, Thunberg was running off to protest for more action to be taken to battle climate change.

The now-19-year-old and shared an insight into her everyday life with The Times.

Having done away with her security detail, the teen shared a potentially dangerous practice she partakes in due to her concerns about her impact on the planet.

She admitted she usually walks home after a night out.

She said: "I always walk. Maybe I should be more cautious... Probably I should be more careful. People tell me I should."

The teen, who has been nominated for the Nobel Peace Prize three times, also revealed she doesn't drink alcohol and has never been drunk.

Michele D'Ottavio / Alamy

"I would never go out drinking... I would never do anything... stupid, and I don't know if that's because I'm that kind of person or if it is because I don't want to be 'seen'. I guess it could be both," she told the Times.

Thunberg also opened up about her fears surrounding flirting or dating.

"Yeah. If I come up to them, you’re more vulnerable. So you have people looking up to you, but you’re also much more vulnerable," she explained.