You must notify us immediately upon becoming aware of any breach of security or unauthorized use of your account.</p> <p> <b>8.3</b> You may not use as a username the name of another person or entity or that is not lawfully available for use, a name or trademark that is subject to any rights of another person or entity other than you without appropriate authorization, or a name that is otherwise offensive, vulgar or obscene.</p> <p> <b>8.4</b> You are fully and solely responsible and liable for the content and data you enter into our Service.