The N-Dubz star joined the ITV1 series last summer, and it's undeniably had an effect on the 23-year-old's career, from the 15 million viewers watching at home to the photographers now following her every move.
But despite having more fans than ever, pals claim Tulisa fears she could end up getting hurt or attacked when out in public.
"Tulisa says at times it can be frightening when there are dozens of fans or paps chasing her," one source told Star magazine.
They explained: "The majority of the people are respectful and friendly, but she does worry that it would only take one oddball to change that. She says it can be total chaos and there she sometimes feel s like she’s in danger."
Friends of the singer, who is expected to be back on the show this year, told the magazine how she has been left "feeling afraid" due to the show's huge impact.
The insider continued: "Tulisa knows that she is very fortunate with an incredible career, but she has also realised that that level of fame and success comes with massive price - your freedom.
"Being made to feel afraid is totally not what she signed up for when she became an X Factor judge"
Former X Factor judge Cheryl Cole found out the hard way that some fans and turn nasty, after she was involved in a clash outside her hotel in 2010.
Returning from filming the show in the early hours, the singer was faced with a mob of photographers and fans who had camped out awaiting her.
An onlooker at the time said: "It was a scrum. A fan surged forward and started grabbing her arm and shaking her."