<p>Questionable publication practices and predatory journals pose an increasing challenge to scientific integrity. These publication models advertise rapid publication times but lack essential quality controls such as peer-review processes, transparency, and charge high fees, which facilitates the dissemination of unreliable research findings. There is an increased risk, particularly for less experienced researchers, of unknowingly publishing in such journals or using their content uncritically. This can negatively impact individual career paths, the scientific community, and public perception of scientific knowledge. The article outlines the key characteristics of predatory journals and analyzes their potential consequences for science, as well as the quality and dissemination of research findings. Practical tools, such as checklists and established resources, are also presented to assist researchers in identifying and avoiding dubious publication offers. Finally, the article emphasizes the importance of raising awareness about this issue to uphold scientific standards and ensure the long-term reliability of research.</p>