Social networking sites like Facebook and Twitter have grown tremendously in popularity but have also been plagued by controversies related to privacy, security, and misuse of personal information. While these sites allow people to connect and share content globally, they have faced issues with unauthorized access to private user data, cyberbullying, hoaxes, and inappropriate or criminal behavior facilitated by users. There are also ongoing debates around how public certain shared content truly is, and whether sites adequately protect users' privacy and personal data for commercial purposes like targeted advertising.