The credibility of The Daily Prophet within the fanfiction world would be severely damaged. Readers of the fanfiction would start to question everything they report, and their influence over the wizarding community in the story would likely decline.
They might have to issue a public apology. This is a common consequence when sued for something like false reporting. It would be a way to try and repair some of the damage done to Harry's reputation.
One reason could be defamation. If The Daily Prophet in the fanfiction spreads false and harmful rumors about Harry Potter, that might lead to a lawsuit. For example, if they wrongly accuse him of dark magic practices.
Maybe Harry sues the Daily Prophet for spreading false rumors about him, like making up stories that he's secretly working for Voldemort again. It could be that these false reports are ruining his reputation and causing problems in his relationships at Hogwarts and in the wizarding community.
Hermione would most likely support Harry. She's always been his loyal friend and would see the injustice of the Daily Prophet's actions. She could help him research laws in the wizarding world (if there are any regarding slander or privacy) and also use her intelligence to find ways to counter the newspaper's claims.
He might be interested in the articles about new magical creatures. Since he has had many encounters with different and often dangerous creatures, news about newly discovered ones or updates on known ones would surely catch his attention.
Maybe he wants to keep up with the latest news in the wizarding world. There could be important announcements, like news about Voldemort's activities or updates on the Ministry of Magic.
One interesting storyline could be about a young journalist at the Daily Prophet uncovering a long - hidden conspiracy within the wizarding world that involves some of the most prominent figures. It could add a new layer of mystery to the already rich Harry Potter universe.
He might do it because the Daily Prophet has been printing untrue stories about him.
Hermione Granger is also very popular. In fanfiction related to the Daily Prophet, she might be working on a research project for the newspaper, using her vast knowledge to dig deep into important wizarding issues. Her intelligence and determination would shine through in this context.
Dumbledore could be an unexpected ally. He might see this as an opportunity for Harry to stand up for himself and gain some closure on his difficult childhood. Also, some of the Hogwarts professors, like McGonagall, could be on Harry's side. They have always cared for Harry's well - being and would not tolerate the Dursleys' abuse. And there could be some new magical characters introduced specifically to help Harry in his legal battle, like a wizard lawyer who has a soft spot for underdog cases.
Hermione would definitely support Harry. She's always been by his side, and she values justice and the proper use of magic and wizarding laws. She would see the wrong in a fanfiction that misrepresents Harry and would use her vast knowledge to help him in the lawsuit.