Twitter with 320 million active users worldwide, seen as an opportunity for criminals with intent to harm, due to the lack of users’ information security awareness. In Indonesia there was a fraud case committed by a college student using a fake Twitter account. The aim of this research is to gain a deeper insight into the level of security awareness among Twitter users in Indonesia based on their group of demographics and knows the relationship between them. The respondent of this research belonged to different gender, age, educational backgrounds, employment, income and hours spent on smartphone and PC. Data was collected and then analysed based on the category of the questions related to basic awareness, technical awareness, advocacy and responsiveness towards the usage of Twitter. It can be concluded that male Twitter users, aged between 29-39 years old, worked as civil servant/private employee, completed postgraduate courses, generated monthly income of above 8 million rupiah and spent time on smartphone and PC for 11-20 hours has the highest level of security awareness. However, Twitter users have to pays more attention in technical setting used in managing their account.
Keyword: Security Awareness, Media Social, Twitter, Demographics.