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Author

H. Harjono

2 papers indexed here

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Open access Sep 2026

Pelokalan Manipulasi Citra Digital Menggunakan Block-Based Fragile Watermarking LSB dan Fungsi Hash Kriptografi

The increasing accessibility of digital image editing tools has made image forgery a growing concern in forensic, legal, and medical imaging contexts, where content authenticity is critical. This study proposes a fragile watermarking scheme based on non-overlapping 2 x 2 pixel block matrices integrated with the MD5 cry...

Raihan Budi Waluyo, Ermadi Satria Wijaya, Sigit Sugiyanto et al. · 0 citations
Open access Aug 2026

Analisis Keamanan Website Sekolah MAN 1 Banyumas Menggunakan Penetration Testing Execution Standard (PTES)

Digital transformation is driving educational institutions to adopt web portals, yet cybersecurity evaluation is still often neglected. This study aims to identify and validate security vulnerabilities on the official website of MAN 1 Banyumas using the Penetration Testing Execution Standard (PTES) framework. Testing w...

Dewi Mardiana, Sigit Sugiyanto, H. Harjono et al. · 0 citations

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