Sam, 37, took to Twitter last night to vent her frustration after yet again receiving a nasty message from the unnamed user.
Even the star's loyal fans have been plagued by hurtful tweets, and things have gone so far that Sam herself has been contacted by social services following false claims made by the virtual bully.
She tweeted: "Seriously love, u must spend no time with ur kid to be spending so much time slagging me off!!! Think about it!!!"
Sam opened up about her Twitter stalker in more detail on the weekend, telling the Daily Star Sunday that "more needs to be done" to clamp down on online trolling.
Mum-of-three Sam said: "It's disgusting. I'm absolutely distraught.
"No matter how much of a good mum you are and how much you dote on your kids there's always the fear that someone could take your kids off you because of what someone has said.
"I love my kids to pieces and would never do anything to harm them."
Former prison guard Sam won The X Factor last year and returned to the stage during Sunday night's semi-final to perform her new single 'With You', originally from the musical Ghost.
She's had a whirlwind of a year since being crowned the champion, including the birth of her third child Miley in September. Sam and her husband Craig are already parents to Brooke, nine, and five-year-old son Tommy.
Sam, who is teetotal, said that the vile troll has reported her to social services twice. it goes without saying that she has been cleared of any wrongdoing towards her children.
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