Celeste Jessin, known online as vmfunc, is a prominent hacker, security researcher, and software developer who excels in reverse engineering and exploit development. With a deep commitment to cybersecurity, she created the SIF Pentesting Suite, a modular toolkit designed for efficient reconnaissance and exploitation tasks. Celeste's expertise extends to advanced topics like forging passkeys and reverse engineering ARM64 hypervisors. Through her platforms, she shares valuable insights into vulnerabilities, social engineering exploits, and software protection methods, emphasizing her focus on identifying weaknesses within systems.

She has worked in various roles across cybersecurity, AI, and software development, contributing to notable projects that enhance security practices. Her investigations have exposed privacy concerns in systems like Persona KYC. In addition to her technical pursuits, Celeste produces music under the vmfunc name, further showcasing her diverse talents. Through her open-source contributions and collaborative projects, she continues to influence the cybersecurity landscape, promoting ethical hacking and community engagement in vulnerability identification and analysis.