About me
10+
years of experience
I'm Karthikeyan, a Cybersecurity Researcher, Investigator, and Educator based in Chennai, India. I lead Cappricio Securities, a cybersecurity consulting firm focused on discovering and securing vulnerabilities across various platforms. With hands-on experience securing major platforms like Android OS, Google, Microsoft, Facebook, Snapchat, and Upwork, my mission extends beyond just finding weaknesses—I work to fortify these systems against potential cyber threats.
In addition to my consulting work, I have trained over 25,000 students across India, equipping the next generation with practical cybersecurity skills and knowledge to tackle real-world challenges. My goal is to make your digital experience safe from malicious actors and empower others to do the same.
Services

web security
As a cybersecurity researcher, I specialize in Web VAPT (Vulnerability Assessment and Penetration Testing), focusing on uncovering and addressing vulnerabilities in web applications to protect against cyber threats. Most of my discoveries involve CVEs and server-side bugs.

Cyber security tool develoment
cybersecurity tool development, I create tools for open-source communities, corporate environments, and clients, aiming to secure applications and support red teaming efforts. Check out my GitHub for open-source projects and explore my contributions to the cybersecurity ecosystem.

Mobile app Pentesting
Mobile app penetration testing is one of my specialties and a personal favorite. I’ve successfully identified significant vulnerabilities, including a notable bug in Android OS that earned me a $5,000 reward from the Android team in 2020.

Robotics and iot
Developing futuristic robots and smart systems with IoT is one of my core skills. I’m not only focused on innovation but also on security, ensuring these systems are built to withstand cyber threats. As both a developer and an IoT penetration tester, I’m dedicated to creating secure IoT products that meet the demands of the future.
Time Line
short description about the talk or the awareness programs
Thanks for your interest ;)
Testimonials and Feedback

Sandiyo Christan
⭐⭐⭐⭐⭐
I discovered an authentication bypass and earned $200 for finding a bug in one of Bugcrowd's programs. Afterward, I enrolled in web app penetration testing and bug bounty, as well as mobile application bug bounty courses at Cappriciosec University. These courses significantly enhanced my knowledge and provided me with real-time experience in cybersecurity

Pranav Kataria
⭐⭐⭐⭐⭐
My name is Pranav Kataria, Assistant Commissioner of Gujarat Police. I have learned many valuable skills from Cappriciosec University, but my favorite topics are RF hacking, mobile tracking, Internet Protocol Detail Records, hacking social accounts and mobile devices, tracking cyber criminals, ATM card cloning, and more. These topics have given me insights into how cybercriminals take advantage of cybercrime and how to track them. I enrolled in the Cyber Crime Investigation course. Thank you for offering this course.

Jeyasri A
⭐⭐⭐⭐⭐
I discovered a code injection bug in one of Google's Android apps, and Google acknowledged my work by providing me with a place in their Hall of Fame. Encouraged by this recognition, I enrolled in Cappricio University's Mobile Application Pen-Testing course. In this course, I delved deep into concepts such as Android static code analysis, iOS dynamic hacking, and malware exploit development.

Dinesh Kumar K
⭐⭐⭐⭐⭐
I recently earned a $500 bounty from a HackerOne program. I come from a commerce background, and the courses at Cappriciosec University have been instrumental in helping me start a career in the cybersecurity field. I am currently working at a Chennai-based startup cybersecurity company and have enrolled in courses on mobile app penetration testing and web bug bounty.

Sibikumar
⭐⭐⭐⭐⭐
Hi sir,l am Sibikumar from psvpec. like to share my experience about our ethical hacking class, the ethical hacking class was very useful and for the first time I learn about ethical hacking.lt statisfied as I expected.The way of your teaching is also very interactive and practical session helped me a lot.These classes made me interest to learn about ethical hacking

G. Sai Venkat from PSVPEC clg
⭐⭐⭐⭐⭐
First of all A heartfelt thanks to you Bro and I' m grateful for the passion and hardwork you bring every day. I have chosen a Ethical Hacking(cybersecurity) course to improve the skills.You are teached more than a teacher Guides like a friends.I have learnt some newly detailed about the cyber security ethical hacking subject because of you bro Thank u You didn't teach us the technicalities of cybersecurity, we approach every problem with resilience. You made complex concepts and tasks simple and in doing easily with a understanding manner First day I faced very difficult to understand, but day by day your teaching is very understandable and improving the knowledge about the subject More than the technical skills, you've instilled a mindset of vigilance, responsibility, and ethics that willstay with me throughout my career

Anonymous
⭐⭐⭐⭐⭐
I have chosen a Ethical Hacking (cybersecurity) course to improve the skills.You are teached more than a teacher Guides like a friends.I have learnt some newly detailed about the cyber security ethical hacking subject because of you bro Thank u You didn't teach us the technicalities of cybersecurity, we approach every problem with resilience.You made complex concepts and tasks simple and in doing easily with a understanding manner First day I faced very difficult to understand, but day by day your teaching is very understandable and improving the knowledge about the subject.More than the technical skills, you've instilled a mindset of vigilance, responsibility, and ethics that willstay with me throughout my career

Anonymous
⭐⭐⭐⭐⭐
Your teachings made us to gain knowledge not only for ethical hacking but also made us to learn things that happen behind every system process.You classes enables us to change the perspective of things that we do day to day task
Farheen Fathima N K
⭐⭐⭐⭐⭐
This IoT and hardware development course exceeded my expectations! It offered a perfect balance of hands-on projects and foundational knowledge, making complex topics easy to understand. The instructor was exceptional—clear, incredibly knowledgeable, and dedicated to ensuring we fully grasped each concept. From day one, I felt engaged and empowered to build real-world IoT solutions. If you’re looking to gain practical IoT skills from the ground up, this course is an excellent choice!

Sandiyo Christan
⭐⭐⭐⭐⭐
I discovered an authentication bypass and earned $200 for finding a bug in one of Bugcrowd's programs. Afterward, I enrolled in web app penetration testing and bug bounty, as well as mobile application bug bounty courses at Cappriciosec University. These courses significantly enhanced my knowledge and provided me with real-time experience in cybersecurity

Pranav Kataria
⭐⭐⭐⭐⭐
My name is Pranav Kataria, Assistant Commissioner of Gujarat Police. I have learned many valuable skills from Cappriciosec University, but my favorite topics are RF hacking, mobile tracking, Internet Protocol Detail Records, hacking social accounts and mobile devices, tracking cyber criminals, ATM card cloning, and more. These topics have given me insights into how cybercriminals take advantage of cybercrime and how to track them. I enrolled in the Cyber Crime Investigation course. Thank you for offering this course.

Jeyasri A
⭐⭐⭐⭐⭐
I discovered a code injection bug in one of Google's Android apps, and Google acknowledged my work by providing me with a place in their Hall of Fame. Encouraged by this recognition, I enrolled in Cappricio University's Mobile Application Pen-Testing course. In this course, I delved deep into concepts such as Android static code analysis, iOS dynamic hacking, and malware exploit development.

Dinesh Kumar K
⭐⭐⭐⭐⭐
I recently earned a $500 bounty from a HackerOne program. I come from a commerce background, and the courses at Cappriciosec University have been instrumental in helping me start a career in the cybersecurity field. I am currently working at a Chennai-based startup cybersecurity company and have enrolled in courses on mobile app penetration testing and web bug bounty.

Sibikumar
⭐⭐⭐⭐⭐
Hi sir,l am Sibikumar from psvpec. like to share my experience about our ethical hacking class, the ethical hacking class was very useful and for the first time I learn about ethical hacking.lt statisfied as I expected.The way of your teaching is also very interactive and practical session helped me a lot.These classes made me interest to learn about ethical hacking

G. Sai Venkat from PSVPEC clg
⭐⭐⭐⭐⭐
First of all A heartfelt thanks to you Bro and I' m grateful for the passion and hardwork you bring every day. I have chosen a Ethical Hacking(cybersecurity) course to improve the skills.You are teached more than a teacher Guides like a friends.I have learnt some newly detailed about the cyber security ethical hacking subject because of you bro Thank u You didn't teach us the technicalities of cybersecurity, we approach every problem with resilience. You made complex concepts and tasks simple and in doing easily with a understanding manner First day I faced very difficult to understand, but day by day your teaching is very understandable and improving the knowledge about the subject More than the technical skills, you've instilled a mindset of vigilance, responsibility, and ethics that willstay with me throughout my career

Anonymous
⭐⭐⭐⭐⭐
I have chosen a Ethical Hacking (cybersecurity) course to improve the skills.You are teached more than a teacher Guides like a friends.I have learnt some newly detailed about the cyber security ethical hacking subject because of you bro Thank u You didn't teach us the technicalities of cybersecurity, we approach every problem with resilience.You made complex concepts and tasks simple and in doing easily with a understanding manner First day I faced very difficult to understand, but day by day your teaching is very understandable and improving the knowledge about the subject.More than the technical skills, you've instilled a mindset of vigilance, responsibility, and ethics that willstay with me throughout my career

Anonymous
⭐⭐⭐⭐⭐
Your teachings made us to gain knowledge not only for ethical hacking but also made us to learn things that happen behind every system process.You classes enables us to change the perspective of things that we do day to day task
Farheen Fathima N K
⭐⭐⭐⭐⭐
This IoT and hardware development course exceeded my expectations! It offered a perfect balance of hands-on projects and foundational knowledge, making complex topics easy to understand. The instructor was exceptional—clear, incredibly knowledgeable, and dedicated to ensuring we fully grasped each concept. From day one, I felt engaged and empowered to build real-world IoT solutions. If you’re looking to gain practical IoT skills from the ground up, this course is an excellent choice!
Talks and Awareness


























































Achievements & Recognition





