Plagiarism of my work
I handled three cases of Plagiarism so far. The fastest way is to write an email to editor-in-chief of the journal and provide some documents showing that this is your work. For example, you can sent your master thesis and specify the similar parts. For me, in all cases, the editor-in-chief quickly removed the paper because they are responsible for the reputation of the journal. In case this doesn't work, then you can ask your university to handle this, but the procedure would be much longer.