Many researchers only realize afterwards that they have unintentionally published in a predatory journal. Such cases are quite common: in a global survey (Elliott 2022, published in Learned Publishing), 22% of nearly 2,000 respondents reported having published in a predatory journal. More than 80% of them were simply unaware that such journals existed.
If you find yourself in this situation, it is important to remain calm and proceed in a structured way. A publication in a predatory journal does not automatically end your academic career.
To date, there is no universally established “gold standard” for handling such a case. The following guidance outlines recommended steps if you discover that you have published in a predatory journal (see also How to respond to and what to do for papers published in predatory journals?).