Social media platforms can combat online harassment and misinformation by implementing stricter content moderation policies, using advanced algorithms and AI to detect harmful content, and promoting user education on digital literacy. Platforms can provide tools for users to report abuse and misinformation easily, enforce penalties for violations, and enhance transparency about their moderation processes. Collaborating with fact-checking organizations and promoting credible sources can help curb misinformation, while fostering community guidelines and encouraging positive interactions can reduce harassment. Regular updates to policies and technology are essential to adapt to evolving challenges.