turnitin is not the primary weapon in the campaign against plagiarism
The Turnitin plagiarism detection system allows individual student assignments to be uploaded and matched for similarity with content on the web, all other assignments uploaded by institutions using the system and numerous journals. There is much literature to show a significant benefit in using Turnitin to identify possible cases of plagiarism. This paper highlights some issues in trusting the similarity score produced by Turnitin.
turnitin plagiarism detection academic impropriety