My colleague, Dr Mehrdad, is quite an expert in this. Have a look at his paper. It's full of info. (Here for me, the challenge is predatory journals, and less of hijacked journals.)
Article The full story of 90 hijacked journals from August 2011 to June 2015
My colleague, Dr Mehrdad, is quite an expert in this. Have a look at his paper. It's full of info. (Here for me, the challenge is predatory journals, and less of hijacked journals.)
Article The full story of 90 hijacked journals from August 2011 to June 2015
If a journal is contacting you asking for submissions, it is almost certainly predatory and/or hijacked. Legitimate journals don't generally solicit submissions unless you're pretty famous (in which case you probably already know the journal well enough to know if it's legitimate or not). If you get a message from a journal that you're not familiar with, and you hadn't contacted them first, ignore it.