Your teen is beginning to mature physically, emotionally, and intellectually and is anxious to experience increasing independence from parents. To some extent that means loosening up on the reins, but by no means does it mean abandoning your parenting role. Teens are complicated in that they demand both independence and guidance at the same time.
Teens are also more likely to engage in risky behavior both online and offline.
While the likelihood of a teen being abducted by someone he meets in a chat room is extremely low, there is always the possibility that he will meet someone online who makes him feel good and makes him want to strike up an in-person relationship. It is extremely important that teens understand that people they meet online are not necessarily who they seem to be. Although it's sometimes difficult to indoctrinate teens with safety information, they can often understand the need to be on guard against those who might exploit them. Teens need to understand that to be in control of themselves means being vigilant, on the alert for people who might hurt them. The greatest danger is that a teen will get together offline with someone she meets online.