Predatory journals

Journals and publishers engaging in any of the following behaviors could possibly be predatory:

• Charging exorbitant rates for publication of articles in conjunction with a lack of peer-review or editorial oversight.
• Notifying authors of fees only after acceptance.
• Targeting scholars through mass-email spamming in attempts to get them to publish or serve on editorial boards.
• Quick acceptance of low-quality papers, including hoax papers.
• Listing scholars as members of editorial boards without their permission or not allowing them to resign.
• Listing fake scholars as members of editorial boards or authors.
• Copying the visual design and language of the marketing materials and websites of legitimate, established journals.
• Fraudulent or improper use of ISSNs.
• Giving false information about the location of the publishing operation.
• Fake, non-existent, or mis-represented impact factors.

Source: https://predatoryjournals.com/about