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All Journal Journal of Computer Science and Informatics Engineering (J-Cosine) Jurnal Teknologi Informasi, Komputer, dan Aplikasinya (JTIKA ) Jurnal Bumigora Information Technology (BITe) Jurnal Begawe Teknologi Informasi
Ahmad Zafrullah Mardiansyah
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Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Electrical & Electronics Engineering Engineering

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Android-Based Porang Cultivation Application Design for North Lombok District Porang Farmers Raphael Bianco Huwae; Andy Hidayat Jatmika; Moh. Ali Albar; Ahmad Zafrullah Mardiansyah; Noor Alamsyah
Journal of Computer Science and Informatics Engineering (J-Cosine) Vol 8 No 2 (2024): Desember 2024
Publisher : Informatics Engineering Dept., Faculty of Engineering, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jcosine.v8i2.600

Abstract

Porang is a plant that has the potential to be developed as an export commodity as a food ingredient or industrial ingredient (i.e., food, cosmetics, medicine, or health). North lombok regency location is one of the districts in ntb that currently has potential for developing porang farming businesses. Porang farming is currently carried out in 2 subdistricts, namely gangga and bayan, and has 800 farmer members with a land area of 1000 ha. Having an android-based application will help with the management of farmer administration. Based on the results of black-box testing, all features were confirmed to function properly. Additionally, the System Usability Scale (SUS) evaluation involving 30 users yielded an average score of 74.16, placing it within the acceptable category).
Server Performance Analysis Against Distributed Denial of Service (DDoS) Attacks (Case Study: Mataram University Academic Information System) Rafli Gunawan Hadi; Ahmad Zafrullah Mardiansyah; Raphael Bianco Huwae
Journal of Computer Science and Informatics Engineering (J-Cosine) Vol 8 No 2 (2024): Desember 2024
Publisher : Informatics Engineering Dept., Faculty of Engineering, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jcosine.v8i2.609

Abstract

Information technology advancement has significantly impacted Indonesia's education sector, including the University of Mataram. The university relies on the Sistem Informasi Akademik (SIA) for various academic activities. However, increasing users has led to challenges such as excessive traffic and server downtime. This research analyzes the impact of DDoS attacks on the SIA server's performance and utilizes Zabbix for server monitoring. The results show that DDoS attacks mainly burden the network traffic component, with a significant increase compared to normal conditions. CPU and RAM resources also increased but less significantly. Monitoring with Zabbix improves the efficiency of performance management, enabling real-time monitoring and easy-to-understand visualization. The findings help administrators identify the need to increase server capacity and implement DDoS detection and mitigation systems to maintain the quality and availability of academic services.
Analisis Kerentanan SQL Injection, Cross Site Scripting, Dan Insecure Direct Object Reference Pada Website Perguruan Tinggi Di Nusa Tenggara Barat Menggunakan Metode Pengujian Penetrasi Dhira Wahyu Febrian; Raphael Bianco Huwae; Ahmad Zafrullah Mardiansyah
Jurnal Bumigora Information Technology (BITe) Vol. 7 No. 1 (2025)
Publisher : Universitas Bumigora

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30812/bite.v7i1.5032

Abstract

Background: In the digital era, cybersecurity is important for universities in protecting academic information and user data. The focus of this research is to identify and analyze the security vulnerabilities of higher education websites in West Nusa Tenggara against three types of attacks, namely SQL Injection, Cross Site Scripting (XSS), and Insecure Direct Object Reference (IDOR), which can compromise the integrity of higher education data and information systems.Objective: This research aims to evaluate the level of vulnerability and severity of the risk of the three types of attacks on the websites of higher education institutions.Methods: This research uses penetration testing methods, and assesses the severity of vulnerabilities based on the Common Vulnerability Scoring System (CVSS) version 3.1.Result: This research results show that 50% of the ten college websites tested are vulnerable to XSS attacks, 30% to SQL Injection, and 20% to IDOR. The highest severity was found in the SQL Injection vulnerability with a CVSS score of 9.0 critical category.Conclusion: The implications of the results of this study indicate that higher education institutions need to immediately strengthen system security with strict input validation, WAF implementation, and adequate authorization mechanisms to prevent future exploitation of similar vulnerabilities.
Security Audit and Analysis of High School Websites Using Cross Site Scripting (XSS) Method and Insecure Direct Object Reference (IDOR) Penetration Test Muhammad Kholilul Adrian; Raphael Bianco Huwae; Ahmad Zafrullah Mardiansyah
Journal of Computer Science and Informatics Engineering (J-Cosine) Vol 9 No 1 (2025): Juni 2025
Publisher : Informatics Engineering Dept., Faculty of Engineering, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jcosine.v9i1.611

Abstract

This study investigates security vulnerabilities in secondary school PPDB websites, focusing on Structured Query Language (SQL) Injection and Cross Site Scripting (XSS) techniques. The research aims to conduct a security audit and analysis using XSS methods and Insecure Direct Object References (IDOR) penetration tests. The primary objectives are to identify existing security gaps, provide recommendations for improvement, and enhance the overall security of these websites. By addressing these vulnerabilities, the study seeks to make PPDB websites more secure and reliable in protecting users' personal data and maintaining system integrity. Additionally, this research aims to raise awareness among PPDB system managers and schools about the importance of cybersecurity in website development and management, offering practical solutions and serving as a reference for improving website security in the educational sector.
Co-Authors Afwani, Royana Agitha, Nadiyasari Ahmad Fauzan Hakim Andy Hidayat Jatmika Ari Hernawan Ariyan Zubaidi Dhira Wahyu Febrian Fitri Bimantoro Heri Wijayanto I Gde Putu Wirarama Wedashwara I Gde Putu Wirarama Wedaswhara W. I Gede Bagus Wirawan I Gede Pasek Suta Wijaya I Gede Putu Wirarama Wedashwara Jamhur Ghifari Jatmika, Andy Hidayat Jatradi Mely Handayani Moh. Ali Albar Muhammad Kholilul Adrian Noor Alamsyah Noor Alamsyah Rafli Gunawan Hadi Ragil Galuh Pangita Ramaditia Dwiyansaputra Raphael Bianco Huwae Sri Endang Anjarwani Wirarama Wedhaswara Yayank Muhammad Abdussyakur