Design and Implementation of a Fraud Call Prevention Scheme on Android Operating Systems

• Main Authors: Fen Chiu, 邱棻
• Other Authors: Hsung-Pin Chang
• Format: Others
• Language: zh-TW
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/06350351691909062079

碩士 === 國立中興大學 === 資訊科學與工程學系所 === 98 === In November 2009, RDEC(Research ,Development and Evaluation Commission, Executive Yuan) announced the top ten grievances and the top one was the extremely large number of fraud calls. Accordingly to the statistics, on average, there are around ten thousand of fraud phone calls everyday. In practice, we do not want to our hard-earned money to be cheated fraudulently, and even cause our harm to our body and mind. Thus, in this paper, we design and implement the detection, notification, and report mechanisms for fraud calls and we have implemented our mechanisms in the Android platform. Firstly, we establish a fraud call detecting server. In addition, by simulating the fraud call number, we create a fraud call database to facilitate fraud phone comparison. Then, we implement the fraud call detection mechanism in the handheld mobile device. We can successfully detect the fraud call and notify the user of the fraud call. Finally, we also implement the report mechanism to allow users to report the telephone number of the fraud call to the database. However, to avoid abuse of our reporting mechanism, users are also required to send their IMSI (International Mobile Subscriber Identity) codes back for authentication purpose. If a user reports a number of fraud calls in a short time interval or lots of the reporting fraud calls are shown to be false, we can use the IMSI code to find the user and give she/he a warning or stop the user the right to return telephone fraud. Through this paper, by our proposed mechanism, we hope to lower the number of fraud calls and to alarm people if a fraud call is coming. Furthermore, we also allow the users to send back the number of fraud calls when the users detects a fraudulent telephone to the database by expanding the database together, we can thereby reduce the success ratio of fraud calls to avoid people to by cheated furthermore.