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All Journal Jurnal Informatika dan Teknik Elektro Terapan Jurnal Inotera JSiI (Jurnal Sistem Informasi) JIPI (Jurnal Ilmiah Penelitian dan Pembelajaran Informatika) JTIULM (Jurnal Teknologi Informasi Universitas Lambung Mangkurat) G-Tech : Jurnal Teknologi Terapan Jurnal Teknologi Informatika dan Komputer Idealis : Indonesia Journal Information System Jurnal Teknik Informatika (JUTIF) Reputasi: Jurnal Rekayasa Perangkat Lunak International Journal Software Engineering and Computer Science (IJSECS) JUSTER: Jurnal Sains dan Terapan Jurnal Pengabdian Masyarakat - Teknologi Digital Indonesia Jurnal Pengabdian Masyarakat Bhinneka Nusantara of Engineering (NOE) Jurnal Pengabdian Masyarakat Bangsa Horizon: Indonesian Journal of Multidisciplinary E-Amal: Jurnal Pengabdian Kepada Masyarakat Journal of Information Technology Journal of Education and ICT
Iskandar, Joko
Universitas Bhinneka PGRI
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Implementasi Esp8266 Deauther Versi 2 Sebagai Media Uji Jaringan Nirkabel Terhadap Serangan Deauthentication Pada Pt. Jaring Solusi Persada Cabang Tulungagung Diyah Anggraini; Yayak Kartika Sari; Joko Iskandar
J-INTECH ( Journal of Information and Technology) Vol 14 No 02 (2026): Journal of Information and Technology
Publisher : LPPM Universitas Bhinneka Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32664/j-intech.v14i02.2297

Abstract

The rapid advancement of wireless network technology and the Internet of Things (IoT) ecosystem in the industrial sector carries significant security risks, particularly regarding vulnerabilities within the management frame protocol. This study aims to evaluate the resilience of wireless network infrastructure against communication disruptions at the protocol level, specifically deauthentication attacks, at PT Jaring Solusi Persada (JSP) Tulungagung Branch. Applying a Research and Development (R&D) method with a Prototyping approach , empirical and real-time testing was conducted using a low-power ESP8266 Deauther Version 2 device as a penetration medium across 15 different access points (APs). Quality of Service (QoS) parameters, including throughput, latency, and packet loss, were measured using Wireshark software to analyze network performance degradation in detail. The experimental results reveal that deauthentication attacks inflict a highly destructive impact on vulnerable devices. Out of the 15 tested APs, 6 units (40%) consisting of consumer-grade devices (such as TP-Link, ZTE, and Totolink) were declared vulnerable because they did not support or activate the Management Frame Protection (MFP/IEEE 802.11w) feature. On these vulnerable devices, the attack successfully triggered complete client disconnections, a drastic 70% drop in throughput (from 567 kbps to 170 kbps), extreme latency spikes ranging from 100 to 300 ms, and a packet loss of 15%. Conversely, 9 AP units (60%), dominated by Ruijie Enterprise business-class devices, successfully withstood the attack and maintained stable network connections due to superior hardware specifications and better defense configurations. This study recommends upgrading network security standards to WPA3 and strictly enabling the Protected Management Frames (PMF) feature to ensure the company's operational continuity.
Rancang Bangun Sistem Timbangan Digital Berbasis Internet of Things (IoT) Menggunakan ESP32 dan Load Cell untuk Mesin Beras di PT. Jaring Solusi Persada Cabang Tulungagung Nur Akhsin Alifian Hadi; Yayak Kartika Sari; Joko Iskandar
J-INTECH ( Journal of Information and Technology) Vol 14 No 02 (2026): Journal of Information and Technology
Publisher : LPPM Universitas Bhinneka Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32664/j-intech.v14i02.2307

Abstract

The advancement of Internet of Things (IoT) technology in industrial sectors has driven the need for more accurate and integrated automation systems, particularly in production weighing processes. PT. Jaring Solusi Persada Tulungagung Branch required improvements in measurement accuracy, real-time data recording, and monitoring of rice milling operations. This research aims to design and develop an IoT-based digital weighing system using ESP32 and load cell to enhance operational efficiency and reduce weighing errors. The research method applied is Research and Development (R&D) using a Prototyping approach, encompassing hardware design, software development, load cell calibration, and direct system testing in the operational environment. The system utilizes the HX711 module as a signal amplifier for the load cell, with ESP32 as the main microcontroller to process weight data and transmit information in real-time via Bluetooth to a Flutter-based mobile dashboard application. Testing results indicate that the system achieved 0% error rate in weighing accuracy tests across six trials with load variations of 1–20 kg. Actuator response tests showed an average response time of 0.80 seconds with an average overshoot of 0.72% of the target weight, within acceptable tolerance for on-off control systems. IoT integration with real-time monitoring via Bluetooth successfully enabled live weight tracking and production history recording. This system demonstrates significant improvement in work efficiency, minimization of human error, and support for faster and more accurate decision-making in rice milling production
PENGEMBANGAN SISTEM KASIR PRINT COLOR ANALYSIS PADA PERCETAKAN PENJILIDAN EXPRESS TULUNGAGUNG MENGGUNAKAN FRAMEWORK LARAVEL DENGAN KERANGKA KERJA SCRUM Lailatul Musyarofa; Yayak Kartika Sari; Joko Iskandar
J-INTECH ( Journal of Information and Technology) Vol 14 No 02 (2026): Journal of Information and Technology
Publisher : LPPM Universitas Bhinneka Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32664/j-intech.v14i02.2341

Abstract

The manual and subjective process of determining color printing costs and recording sales transactions at Penjilidan Express, which resulted in inconsistent pricing, recording errors, and reduced operational efficiency. This research focuses on developing a web-based cashier system equipped with a Print Color Analysis feature to support more objective and consistent printing cost estimation and streamline transaction management. The system was developed using the Scrum framework and implemented with the Laravel framework based on the Model-View-Controller (MVC) architecture. The Print Color Analysis feature calculates the percentage of RGB/CMYK color composition from digital files in JPG, PNG, and PDF formats to automatically estimate printing costs. The developed system was evaluated through Black Box Testing across seven core functional features. The results demonstrated that every tested feature performed as expected, achieving a 100% success rate and confirming that the system fulfilled all predefined functional requirements.The developed system is expected to improve the consistency of printing cost calculations, streamline transaction processing, and minimize the risk of errors in sales data recording. Therefore, the proposed system can serve as an effective solution to support operational efficiency, pricing transparency, and business digitalization in printing service companies.  
SISTEM DIGITAL DALAM PENGEMBANGAN KAPASITAS SDM BERBASIS GENDER MENGGUNAKAN SKEMA REMOTE MODERATED USABILITY TESTING Joko Iskandar; Vertika Panggayuh; Diana Putri
JIPI (Jurnal Ilmiah Penelitian dan Pembelajaran Informatika) Vol 10, No 4 (2025)
Publisher : STKIP PGRI Tulungagung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29100/jipi.v10i4.9656

Abstract

Perkembangan teknologi digital telah mendorong transformasi dalam pengembangan kapasitas Sumber Daya Manusia (SDM), terutama melalui platform pembelajaran daring yang lebih fleksibel dan mudah diakses. Namun demikian, masih terdapat kesenjangan dalam pengalaman pengguna yang dipengaruhi oleh faktor gender, khususnya ketika sistem digital tidak dirancang secara inklusif. Penelitian ini bertujuan mengevaluasi tingkat usability sistem digital pengembangan SDM berbasis gender menggunakan metode Remote Moderated Usability Testing (RMUT). Pendekatan penelitian yang digunakan adalah deskriptif kuantitatif dengan melibatkan 20 partisipan (10 laki-laki dan 10 perempuan) yang dipilih melalui simple random sampling. Proses pengujian dilakukan secara daring melalui aplikasi Zoom, di mana partisipan diminta menyelesaikan enam skenario tugas: login dan navigasi, mengikuti pelatihan, mengerjakan evaluasi, mengunggah tugas, mengakses sertifikat, dan memberikan umpan balik. Data dikumpulkan melalui observasi interaksi, rekaman layar, dan kuesioner SUS serta UEQ, kemudian dianalisis menggunakan SmartPLS. Hasil penelitian menunjukkan bahwa usability sistem secara umum berada pada kategori baik, ditunjukkan dengan skor SUS rata-rata di atas 70. Namun, ditemukan perbedaan signifikan berbasis gender. Partisipan laki-laki menunjukkan performa penggunaan yang lebih lancar dengan skor SUS dan UEQ lebih tinggi pada sebagian besar dimensi, seperti daya tarik, efisiensi, kejelasan, keandalan, stimulasi, dan kebaruan. Sebaliknya, partisipan perempuan mengalami lebih banyak hambatan, terutama pada aspek desain antarmuka mobile, keterbacaan teks, dan fleksibilitas fitur unggah file. Metode RMUT terbukti efektif dalam mengungkap perbedaan pengalaman pengguna secara lebih mendalam dibandingkan penggunaan kuesioner semata, karena mampu menangkap proses interaksi dan kendala aktual yang dialami pengguna. 
Analisis Prediksi Stok Barang di Gudang PT XYZ Menggunakan Time Series Forecasting Yuliyanti, Nurul Eka; Sari, Yayak Kartika; Iskandar, Joko
HORIZON: Indonesian Journal of Multidisciplinary Vol. 4 No. 4 (2026): HORIZON: Indonesian Journal of Multidisciplinary
Publisher : Lembaga Intelektual Muda (LIM) Maluku

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54373/hijm.v4i4.6706

Abstract

PT XYZ still implements a manual inventory recording process, potentially causing stock discrepancies that can disrupt the company's operational flow. This study aims to predict inventory needs to support more accurate stock control. The data used are historical purchase and inventory data for the period April–September 2025. The analysis was conducted using three time series methods, namely Moving Average (MA), Exponential Smoothing (ES), and Autoregressive Integrated Moving Average (ARIMA). The analysis stages include identifying data patterns, model formation, parameter testing, forecasting inventory needs, and evaluating model accuracy using Mean Absolute Error (MAE), Mean Absolute Percentage Error (MAPE), and Root Mean Square Error (RMSE). The model with the smallest error value was selected as the best model to determine stock needs, Safety Stock, and Reorder Point. The results showed that the ARIMA (1,1,1) model provided the best level of accuracy with an MAE value of 98.71, MAPE 7.25%, and RMSE 124.46. Based on this model, the estimated inventory requirement for the next period is 1,312 units, with a safety stock of 152 units and a reorder point of 1,458 units. The analysis results are visualized in a dashboard, showing that the majority of inventory is in the safe category, thus supporting more effective inventory control.
Analisis Kerentanan Keamanan Website Ruangcosplay dengan Menggunakan Metode Penetration Testing Berbasis Owasp TOP 10:2021 Putra, Valentino Eka Apritha; Iskandar, Joko; Prasetya, Agung
HORIZON: Indonesian Journal of Multidisciplinary Vol. 4 No. 4 (2026): HORIZON: Indonesian Journal of Multidisciplinary
Publisher : Lembaga Intelektual Muda (LIM) Maluku

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54373/hijm.v4i4.6748

Abstract

The RuangCosplay website manages user data and transactions, requiring a security system capable of protecting against various cyber threats. However, a comprehensive evaluation of the website's security vulnerability level based on current security standards is not yet available. This study aims to identify and analyze the security vulnerabilities of the Ruang Cosplay website using penetration testing methods based on the OWASP Top 10:2021. Testing refers to the NIST SP 800-115 framework, which includes the planning, discovery, attacking, and reporting stages. Vulnerability identification was carried out through open-source intelligence and scanning using Nmap, OWASP ZAP, Dirsearch, and WhatWaf. The results showed that no vulnerabilities with a high or critical risk level were found, so the website's overall security level is considered good. However, 11 vulnerabilities were identified, consisting of 3 medium-risk vulnerabilities and 8 low-risk vulnerabilities. Medium-risk vulnerabilities include the use of an outdated TLS protocol, the absence of a Content Security Policy header, and the failure to implement the Subresource Integrity attribute in third-party scripts. Low-risk vulnerabilities were dominated by misconfigurations in cookies and security headers. This research recommends updating to TLS 1.2 or TLS 1.3, implementing the HttpOnly and Secure attributes on cookies, and implementing Subresource Integrity to improve website security and reduce the potential for future exploits.
Optimalisasi Media Pembelajaran di SMP Tahfidz Modern Lubabul Fattah melalui Pelatihan Pembuatan Game Edukatif Berbasis Wordwall Yayak Kartika Sari; Mohamad Khoirul Ansor; Joko Iskandar
Jurnal Pengabdian Masyarakat - Teknologi Digital Indonesia. Vol 5, No 1 (2026): Maret 2026
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat - Universitas Teknologi Digital Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26798/jpm.v5i1.2250

Abstract

Perkembangan teknologi informasi dan komunikasi di era digital telah membawa perubahan signifikan dalam berbagai aspek kehidupan, termasuk dalam dunia pendidikan. Dalam konteks pendidikan di tingkat Sekolah Menengah Pertama (SMP), khususnya di lembaga yang mengusung konsep integrasi antara pendidikan umum dan agama seperti SMP Tahfidz Modern Lubabul Fattah, penggunaan media pembelajaran yang menarik dan kontekstual menjadi sangat penting. Siswa di sekolah ini diharapkan tidak hanya unggul dalam hafalan Al-Qur’an, tetapi juga mampu memahami materi pelajaran umum secara mendalam. Sayangnya, tantangan yang dihadapi guru adalah keterbatasan media pembelajaran yang mampu menjembatani kebutuhan tersebut. Salah satu solusi yang dapat digunakan untuk menjawab tantangan ini adalah penerapan aplikasi Wordwall dalam pembelajaran. Evaluasi dari tim pengabdi untuk mengetahui tingkat pemahaman peserta dengan memberikan soal Pre-Test dan Post- Test. Peserta yang mengikuti dari awal sampai akhir mengalami peningkatan pengetahuan yang dapat dilihat dari hasil pembandingan nilai pre test dengan nilai post test dengan hasil rata-rata Pre-Test yaitu62. Setelah dilakukan Post-Test meningkat menjadi 92,67. Peserta kegiatan mencakup guru SMP Tahfidz Modern Lubabul Fattah. Peserta juga mengisi kuisoner untuk mengetahui Tingkat kepuasan terhadap pelatihan media interaktif dengan menggunakan Wordwall. Tingkat kepuasan diperoleh nilai rata-rata skala penilaian 5 yaitu 18 dan rata-rata skala penilaian 4 yaitu 12 sehingga dapat disimpulkan bahwa kegiatan memuaskan peserta kegiatan
Pengembangan Sistem Kursus Online Smart Study Club (SSC) Berbasis Adaptif Learning Path Menggunakan Kerangka Kerja Scrum Mumtaza, Ilyas Abdullah; Sari, Yayak Kartika; Iskandar, Joko
HORIZON: Indonesian Journal of Multidisciplinary Vol. 4 No. 3 (2026): HORIZON: Indonesian Journal of Multidisciplinary
Publisher : Lembaga Intelektual Muda (LIM) Maluku

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54373/v9vgnh98

Abstract

Online course-based learning generally still applies uniform materials and assessments to all students without considering differences in individual abilities. This condition results in a less personalized learning process and has the potential to reduce learning effectiveness. This study aims to develop a web-based online course system that implements an Adaptive Learning Path (ALP) to adjust the material and the difficulty level of questions based on student abilities. The study used a Research and Development (R&D) method with software development based on the Scrum framework, which includes the product backlog, sprint planning, sprint execution, and sprint review stages. The system implements the Item Response Theory (IRT) Rasch Model algorithm with the Maximum Likelihood Estimation (MLE) method to estimate student abilities and determine questions adaptively. The results of the study produced an online course platform equipped with adaptive learning path features, IRT-based automatic quizzes, a leaderboard, and a material management administration panel. Black box testing results showed that all system functions ran well and were valid, while beta testing on 26 users obtained a feasibility level of 86.8%, which is categorized as very feasible. These findings indicate that the developed system is able to support more personalized, adaptive, and effective learning according to the abilities of each student.
Identifikasi Kuantitas Relevan pada Soal Cerita Matematika Menggunakan Model BiLSTM dan CRF Hidayat, Muhamad Taufiq; Prasetya, Agung; Iskandar, Joko
HORIZON: Indonesian Journal of Multidisciplinary Vol. 4 No. 4 (2026): HORIZON: Indonesian Journal of Multidisciplinary
Publisher : Lembaga Intelektual Muda (LIM) Maluku

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54373/3fj09730

Abstract

Mathematical word problems often contain information that is not entirely relevant to answering the question, causing students to make errors in selecting important information. This study aims to identify relevant quantities in Indonesian mathematical word problem texts using a sequence labeling approach. The dataset consists of 700 problems collected from elementary school mathematics e-books and annotated using the BIO scheme (B-REL, I-REL, and O). The model employed is a combination of BiLSTM and CRF with an 80:20 train–test split. Evaluation is conducted using precision, recall, F1-score, and accuracy, with a focus on the F1-score of the REL class. The results show that the model achieves an F1-score of 0.9726. The dominant error occurs in the misclassification of REL as O, indicating that quantity spans are often truncated across tokens. However, no violations of the BIO scheme are observed, ensuring consistent label sequences. These findings indicate that the combination of BiLSTM and CRF is effective in identifying relevant quantities and has the potential to support the understanding of mathematical word problems.
Co-Authors Agung Prasetya Agung Prasetya Agung Prasetya Ahmad Fathurrohim Amartya Bambang Kusuma Ansor, Mohamad Khoirul Dani Irwansyah Dea Preciosa Santyana Putri Dede Kurniadi Dewi, Stefanic Siska Diana Putri Diyah Anggraini Fahrur Rozi FITRIYASARI, MALIATUL Heri Suhendar Heri Suhendar Hidayat, Muhamad Taufiq Kusuma, Amartya Bambang Kusumaningtyas, Cecilia Putri Lailatul Musyarofa Luthfiana, Tias Hafidzotul Mohamad Khoirul Ansor Mohamad Khoirul Ansor Mumtaza, Ilyas Abdullah Nawang Rimarsha Alifdyani Nisa Ayu Cahyaningrum Nur Akhsin Alifian Hadi Nurwiyati Prihandari Oktaviana Dyah Palupi Pamungkas, Bian Dwi Panggayuh, Vertika Putra, Valentino Eka Apritha Renzy Praha Nandiva Renzy Salaam, Prana Abdul Salma Salsabila Dwinta Sari, Yayak Kartika Taufiq Agung Cahyono Taufiq Agung Cahyono Vertika Panggayuh Wildasieputra, Wahyu Yosep Septiana Yuliyanti, Nurul Eka