Plagiarism check service steals author's article: A case study

Case: An author decided to run her paper through a plagiarism check before submitting it to a journal. Although she had written the paper herself and there was ideally no need for a plagiarism check, she wanted to get it done. She found an online plagiarism check service but the cost was high. However, availing the same service through an online marketplace would reduce the cost by half and if the paper was sent through a customer service vendor, the cost would reduce further.