Neteller is very secure, and it is very secure when it comes to privacy too. All transactions are encrypted, and Neteller only stores personal information when it is necessary for the operation of the service. This means that any information you give them is kept securely, and not shared with any third parties.
Neteller always encourages its users to take steps to further protect their account information by using strong passwords and two-factor authentication. Neteller also features a number of fraud detection measures, so that users can be sure that their money and information is safe.