Information system security is a crucial aspect in maintaining the confidentiality and integrity of user data. The IITC Intermedia website of Amikom Purwokerto University serves as an information system for national events and stores participants' personal data, necessitating a security evaluation. This study aims to analyze vulnerabilities on the website using the Vulnerability Assessment method with the OWASP ZAP tool. The research process involves data collection, vulnerability scanning, result analysis based on the OWASP Top 10 2021 categories, and providing technical recommendations. The scan results revealed 23 vulnerabilities, consisting of 1 high-risk, 4 medium-risk, 9 low-risk, and 9 informational findings. Among these, 15 vulnerabilities fall under the OWASP Top 10 classification. Key vulnerabilities identified include the use of outdated JavaScript libraries, security header misconfigurations, and weaknesses in session management and access control. Based on these findings, several mitigation measures are recommended to strengthen system security. This study emphasizes the importance of implementing OWASP standards in the development and management of web-based information systems.

Methodology is a very important basic framework in the design and development of professional software, aimed at creating an information system that meets the business needs of an organization. Success in software development relies heavily on managing the software project as a whole. Establishing a methodology includes high dynamics in the design stages of a model that describes the activities and life cycle of a system. SDLC (Systems Development Life Cycle) or Systems Development Life Cycle, in the context of systems and software engineering, is a process that includes the creation and modification of systems, as well as the models and methodologies used to develop them. This discussion will explain the analysis of selecting software development methodologies, including waterfall, prototype, iterative, spiral, and rapid application development (RAD). It is hoped that the results of this discussion can provide considerations in choosing and using the right methodology based on each individual's needs, strengths and weaknesses, as well as other factors such as familiarity with technology, system complexity, system reliability, and short and precise time requirements, as well as referencing several scientific journals.

As human habits change due to advances in technology and information, technology is increasingly important in various aspects of life. Companies must keep up with development trends in the globalization era to develop their products and compete with fierce business competition. Artasari UMKM produces a variety of chips located in one of the villages in Purbalingga Regency. This UMKM still conducts sales and marketing traditionally. Bookkeeping and recording of transactions are still done manually, which causes many problems, such as consumers not trusting the results of calculations. A cashier information system is needed to improve operational efficiency and transaction security. It can help with data collection, bookkeeping, and recording transactions as well as creating financial reports as needed. In this research, the prototyping model is used to design a cashier application at UMKM Artasari. It is considered to help overcome this problem. This research is expected to improve the operational efficiency and security of UMKM Artasari transactions and increase consumer confidence in the calculation results. The result of the design is a system display consisting of several pages which include the login page, transaction data, sales reports, help, and prototype proof of transactions to be printed.

In the current era of globalization, regional autonomy has become a very important part of public services. There is a need to address the problems that arise in Sokawera Village regarding the lack of facilities and skill level of village officials with the demands of a more dynamic community and an archival processing system that is still conventional. With the conveniences provided, it encourages people to utilize information and communication technology to help with their daily activities. The village government does not yet have a website address. This means that the information held by the village cannot be accessed by the wider community, causing Sokawera Village to still be very underdeveloped. In the era of increasingly advanced technology, a website-based information system can be implemented in Sokawera Village to overcome obstacles that can be used as a medium for village information and innovation. With the existence of a village information system in Sokawera Village, the community can directly access various kinds of information presented. Likewise, village officials can directly provide or update information related to the villages they support. All forms of information regarding purchasing products produced by local MSMEs can also be accessed on the village information system page. The methods used in this research are problem formulation, data collection, problem identification, system development using research results method.