If someone posts copyrighted content on a website without permission, the website owner may face potential legal action from the copyright holder. The website owner could be sued for copyright infringement, even if they were unaware of the unauthorized posting.
The website owner's liability depends on various factors, such as whether the use of the copyrighted material qualifies as fair use under copyright law. Fair use exceptions allow limited use of copyrighted material without permission, such as for educational, commentary, or news reporting purposes. The specific circumstances, including the nature of the work, the purpose of the use, the amount used, and the impact on the market for the original work, would all be considered in determining if the use is fair. If the use does not meet the fair use criteria, the copyright holder may be able to seek damages or an injunction against the website owner.