Peter H.

I have extensive experience working with Linux operating systems as a system and network administrator with Ubuntu and Android operating systems but also use Mac os for cross platform application testing. I have expereince working with Bash and Shell scripting. I have worked with C++ for backend programing and with Java for Android development I have experience with servers, cloud based services like heroku or AWS and containerization. I can work as a pentester (bug bounty hunter). I have experience doing packet sniffing, analysis , testing websites and servers and reverse engineering and can identify vulnerabilities in a website like XSS, SSRF, CSRF, Cache poisioning, SQL injections, PHP injections (or any backend parameter injection), outdated vulnerable software etc... Author of the book: "Operation Security , a step by step guide using Ubuntu Linux" I have a lot of knowledge working with symmetric and asymmetric cryptography an digital signatures, blockchains..