Abbas Hoseiny · Baden-Württemberg

Finding vulnerabilities,
building systems.

Independent security researcher and developer. I build systems, from the platform to the app, and look for vulnerabilities in widely used software.

Illustration from the Google Messages case
Featured · Security research
A preview to render, your IP to the sender.
Google Messages — the app that handles texts and RCS on most Android phones — builds link previews on the device. So a link from a saved contact reveals the recipient's IP address and device to the link's server.
CVSS 4.3Google Mobile VRPPublished
Read the case →
 Explore
Security research
Coordinated-disclosure case studies — real vulnerabilities, reported through national CERTs, written up honestly with defensible scores.
3 PUBLISHED · MORE IN PREPARATION
Projects
Systems I build — web apps, platforms and apps. First up: Digitale PSM, a web app with SQLite over WebAssembly in the browser.
DIGITALE PSM · PKD · PDF ON
Weblog & notes
Experiments and research notes — for example, how platforms fetch the links you post.
IN PREPARATION
About & CV
Who I am, certificates, and how to reach me.
ABOUT · CV · HOW I WORK