Dr. Sarah Wijaya, Ph.D.
Lead Security Researcher di dan777 dengan Ph.D. in Computer Science dari Stanford University. Spesialisasi dalam Android security, malware detection using machine learning, dan mobile threat analysis. 12+ tahun pengalaman di Google Android Security Team, kontributor AOSP, dan published researcher di konferensi internasional (BlackHat, DEF CON, OWASP AppSec).
Pendidikan
Pengalaman Profesional
Publikasi & Research
Machine Learning-Based Android Malware Detection: A 5-Year Retrospective
Comprehensive analysis of ML-based Android malware detection approaches from 2018-2023. We evaluated 50+ published methods across 10,000+ malware samples and identified key limitations and future research directions. Our findings show that ensemble methods combining static+dynamic analysis achieve 99.2% detection rate with 0.3% false positive rate.
Read Paper →PermGuard: Permission-based Android Security Framework for Zero-day Threat Detection
We propose PermGuard, a novel permission-based security framework that analyzes Android app behavior patterns to detect zero-day threats. Evaluated on 50,000+ apps, PermGuard achieved 97.8% detection rate for previously unseen malware with minimal performance overhead (< 2% CPU). The framework has been deployed in production by 3 major Android OEMs.
Read Article →Breaking Android: Advanced Exploitation Techniques for Security Researchers
Live demonstration of advanced Android exploitation techniques including kernel exploitation, SELinux bypass, and persistent backdoor installation. Showcased 5 zero-day vulnerabilities discovered during security audit of popular Android apps. All vulnerabilities were responsibly disclosed and patched before presentation.
Watch Talk →Android Malware Evolution: A Comprehensive Study of 100,000 Samples (2015-2020)
Longitudinal study analyzing evolution of Android malware over 5 years. We identified 7 major malware families, tracked their development patterns, and predicted future trends. Dataset of 100,000+ malware samples made public for research community. Study cited 150+ times in security research papers.
Read Paper →
Sertifikasi Profesional
Tim Expert Lainnya (31 Members)
Ahmad Pratama
10+ tahun experience dalam mobile security testing. Ex-Microsoft Security Response Center. Bug bounty hunter dengan 50+ CVE discoveries.
Linda Kusuma
Spesialisasi dalam reverse engineering Android malware. 8+ tahun di Kaspersky Lab. Published researcher di BlackHat & DEF CON.
Reza Firmansyah
15+ tahun dalam information security management. Certified ISO 27001 Lead Auditor. Memastikan compliance dengan standar internasional.
Dimas Hermawan
7+ tahun dalam secure software development. Membangun CI/CD pipeline dengan security automation. Ex-Tokopedia Security Team.
Novi Rahmawati
9+ tahun dalam mobile forensics dan incident response. Certified forensics examiner. Membantu investigasi cyber crime untuk law enforcement.
26 Expert Lainnya
Tim multidisiplin mencakup malware analysts, penetration testers, security engineers, dan forensics specialists dari berbagai backgrounds.