What if my work is being plagiarized?

In terms of merriam-webster dictionary, plagiarizing means to steal or pass off ideas or words of another as one's own, without crediting the source. 

If it is noticed that your published work is being plagiarized without your permission or without giving you the credit, a legal notice may be sent immediately to stop from staling the content. If the offense, however, continues, a legal suit may be filed in an appropriate court.