BSE Limited has issued a warning to investors regarding an individual named Aditya Rishab Mishra, who is allegedly offering unregistered investment and trading recommendations and account handling services. The stock exchange cautioned investors to avoid such illegal services, emphasizing that Mishra is neither a registered member nor an authorized person of BSE. Investors are advised not to share trading credentials and to verify the registration of intermediaries on the BSE website. BSE also highlighted SEBI's recent alerts about unregistered advisory services and urged investors to use SEBI's portal for protection.