Blackberry Messenger is one of the popularly used instant messaging applications on Android with user’s amount that increase significantly each year. The increase off Blackberry Messenger users might lead to application misuse, such as for commiting digital crimes. To conduct investigation involving smartphone devices, the investigators need to use forensic tools. Therefore, a research on current forensic tool’s performance in order to handle digital crime cases involving Android smartphones and Blackberry Messenger in particular need to be done. This research focuses on evaluating and comparing three forensic tools to obtain digital evidence from Blackberry Messenger on Android smartphones using parameter from National Institute of Standard Technology and Blackberry Messenger’s acquired digital evidences. The result shows that from comparative analysis conducted, Andriller gives 25% performance value, Oxygen Forensic Suite gives 100% performance value, and Autopsy 4.1.1 gives 0% performance value. Related to National Institute of Standard Technology parameter criterias, Andriller has performance value of 47.61%. Oxygen Forensic Suite has performance value of 61.90%. Autopsy 4.1.1 has performance value of 9.52%.

No abstract

The decision-making process has many assessment criteria needed as the basis for its assessment. A large number of problems regarding the length of time required in the decision-making process require decision-makers to find solutions. Decision Support System is one option that can be developed by decision makers because it can help improve efficiency and accuracy in the decision-making process. The process of developing decision support requires certain calculation methods as part of the processing. The methods that are quite widely used to build a decision support system include the Simple Additive Weighting (SAW) method and the Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) method. This research aims to analyze the accuracy of the cases raised as solutions to decision-making problems. A dynamic decision support system has been successfully created to design dynamics in the calculation of the SAW method and the TOPSIS method. The system is evaluated and analyzed for its accuracy level based on manual calculations. The results obtained are the SAW system has an accuracy value of 65% and the TOPSIS system is 100%. Furthermore, the calculation of the accuracy value of the SAW and TOPSIS methods in order to find out the best method to use by taking parameters in the form of the same value results generated from the calculations of the two methods. The results obtained are the accuracy value of the SAW method of 40% and the TOPSIS method of 100% based on testing using 60 employee data and 8 criteria used.

Instant Messaging application is the most widely used application all over the world. Blackberry Messenger is a multiplatform instant messaging application with lots of features that can be a magnet for many people to use it as a tool for commiting digital crimes. In the process of investigating digital crime cases, digital evidences are required, and to obtain digital evidence, a set of forensic tools are needed to conduct forensic process on physical evidences. The topic of this research is to describe the forensic process and to compare the current forensic tools used based on acquired digital evidences by using method that refers to mobile device forensic guidelines made by the National Institute of Justice (NIJ). The forensic tools used in this research are Magnet AXIOM, Belkasoft Evidence Center, and MOBILedit Forensic Express. The outcome shows that Magnet AXIOM has the highest capability to obtain digital evidences, Belkasoft Evidence Center has superiority in terms of data text acquisition, and MOBILedit Forensic Express has superiority in physical evidence preserving and cloning.

The development of technology is now getting wider and starting to spread in various fields, one of the areas affected by the development of technology is education. This development has the intention of streamlining existing activities. The design of the school information system at MTsN 8 Bantul is to facilitate activities in data processing at the school. Using the waterfall method is expected to make it easier in this research, as well as telling, analyzing, and classifying problems as a supporting method. The result of this research is a school information system design.