Hello there! My name is Ricardo and I am a penetration tester based in Madrid, Spain, with 9 years of experience.
I studied Telecommunications Engineering Degree and a Master’s Degree in Universidad Politécnica de Madrid, where I worked 2 years as researcher. After that I have worked ~8 years as penetration tester/red teamer in Indra, then Entelgy Innotec and now Siemens Smart Infrastructure (Siemens SI).
I will write about open-source tools from my Github or hacking techniques I learn, to have a reference in the future… because I always forget :)
Contact information
LinkedIn: https://www.linkedin.com/in/ricardojoserf/
Twitter: https://twitter.com/ricardojoserf
Feel free to contact me!

Some of my certs …
| - GIAC Exploit Researcher and Advanced Penetration Tester (GXPN) - GIAC | 
| - GIAC Red Team Professional (GRTP) - GIAC | 
| - GIAC Web Application Penetration Tester (GWAPT) - GIAC | 
| - GIAC Certified Incident Handler Certification (GCIH) - GIAC | 
| - GIAC Cloud Penetration Tester (GCPN) - GIAC | 
| - Offensive Security Certified Expert 3 (OSCE3) - Offensive Security | 
| - Offensive Security Experienced Penetration Tester (OSEP) - Offensive Security | 
| - Offensive Security Exploit Developer (OSED) - Offensive Security | 
| - Offensive Security Web Expert (OSWE) - Offensive Security | 
| - Offensive Security Certified Expert (OSCE) - Offensive Security | 
| - Offensive Security Certified Professional (OSCP) - Offensive Security | 
| - Offensive Security Wireless Professional (OSWP) - Offensive Security | 
| - Assessing and Exploiting Control Systems and IIoT - Black Hat | 
| - Burp Suite Certified Practitioner - PortSwigger | 
| - Certified Enterprise Security Specialist (PACES) - Pentester Academy | 
| - Certified Red Team Expert (CRTE) - Pentester Academy | 
| - Certified Azure Red Team Professional (CARTP) - Pentester Academy | 
| - Certified Red Team Master (CRTM) - Altered Security | 
| - Certified Enterprise Security Professional - AD CS (CESP-ADCS) - Altered Security | 
| - Pentester Academy Cloud Security Professional (PACSP) - Altered Security | 
| - SecurityTube Linux Assembly Expert (SLAE-32) - SecurityTube | 
| - Cisco Certified Network Associate - Cisco | 
| - Cisco Certified Network Associate Routing and Switching - Cisco | 
| - eLearnSecurity Certified Penetration Tester Extreme (eCPTX) - eLearnSecurity | 
| - Certified Red Team Operator (CRTO) - Zero-Point Security | 
| - Certified Red Team Lead (CRTL) - Zero-Point Security | 
| - Hack The Box Pro Labs: Alchemy - Hack The Box | 
| - Hack The Box Pro Labs: APTLabs - Hack The Box | 
| - Hack The Box Pro Labs: Cybernetics - Hack The Box | 
| - Hack The Box Pro Labs: Dante - Hack The Box | 
| - Hack The Box Pro Labs: Offshore - Hack The Box | 
| - Hack The Box Pro Labs: Rastalabs - Hack The Box | 
| - Microsoft Certified: Azure Security Engineer Associate (AZ-500) - Microsoft | 
| - Microsoft Certified: Azure Fundamentals (AZ-900) - Microsoft | 
| - Microsoft Certified: Security, compliance and identity (SC-900) - Microsoft | 
| - Microsoft Certified: Azure AI (AI-900) - Microsoft | 
| - Microsoft Certified: Azure Data (DP-900) - Microsoft | 
| - AWS Certified Cloud Practitioner - Amazon Web Services (AWS) | 
| - Red Team Operator – Windows Persistence and Windows Evasion - Sektor7 | 
| - Red Team Operator – Malware Development Essentials and Intermediate - Sektor7 | 
| - Malware Development Course - MalDev Academy | 
| - CyberWarFare Labs Red Team Specialist (CRTS) - CyberWarFare Labs | 
| - Hybrid Multi-Cloud Red Team - CyberWarFare Labs | 
| - Multi-Cloud Red Team Analyst - CyberWarFare Labs | 
| - Practical Industrial Control Systems Penetration Testing - Udemy |