David Gyedu
DK Cyber
Cybersecurity Expert specializing in Penetration Testing, Exploit Development, Financial Fraud Intelligence, and Security Audits
Areas of Expertise
Penetration Testing / Ethical Hacking
Comprehensive security assessments to identify vulnerabilities and strengthen your defenses through professional penetration testing methodologies.
Learn More
Exploit Development
Advanced exploit development and vulnerability research to understand and mitigate threats in modern systems and applications.
Learn More
Financial Fraud Intelligence
Specialized intelligence gathering and analysis to detect and prevent financial fraud through advanced tracking and investigation techniques.
Learn More
Security Audits
Thorough security audits to ensure compliance and identify potential security gaps in your infrastructure and applications.
Learn More
Digital Forensics
Advanced digital forensics to investigate and analyze digital evidence from compromised systems and networks.
Learn More
OSINT Intelligence
Advanced OSINT intelligence to investigate and analyze digital evidence from compromised systems and networks.
Learn More
Threat Intelligence
Advanced threat intelligence to investigate and analyze digital evidence from compromised systems and networks.
Learn MoreLearn Ethical Hacking
From the hand of an expert in Cybersecurity and Ethical Hacking in business environments.
100% Online
From the comfort of your home, at your own pace and without complications. You decide when and how to study.
Professional Certificate
At the end of the courses you will obtain a Professional Certificate. Get certified in Ethical Hacking!
The latest technologies
In all courses we use the latest technologies and the most up-to-date tools
Training Methodology
Proven methodologies developed from 15+ years of real-world cybersecurity experience
Professional Certificate
At the end of each course, you will earn a professional certificate that will validate your skills and open doors for you in the exciting field of cybersecurity.
All of our Cybersecurity and Ethical Hacking courses are available on Udemy, so each certificate has a unique ID and is always available online to view or download.
CERTIFICATE OF COMPLETION
Advanced OSINT Course: Open Source Intelligence
Instructor: David Gyedu (DK Cyber)
This is to certify that
Student Name
Date: January 1, 2024
Duration: 3.5 hours in total
Featured Projects
Showcasing impactful cybersecurity solutions and security assessments that protect organizations worldwide
50+ Vulnerabilities Found
Enterprise Security Assessment
Comprehensive penetration testing and security audit for a Fortune 500 company, identifying critical vulnerabilities and providing remediation strategies.
99.8% Detection Rate
Financial Fraud Detection System
Developed an advanced fraud intelligence system that tracks and prevents financial fraud through real-time monitoring and pattern analysis.
10K+ Downloads
Exploit Development Framework
Created a comprehensive framework for exploit development and vulnerability research, used by security teams worldwide.
5K+ Students Trained
Cybersecurity Training Platform
Built an interactive training platform for cybersecurity professionals, covering penetration testing, ethical hacking, and security best practices.
Security Tools & Technologies
Industry-standard tools and technologies used in cybersecurity operations
Client Testimonials
What industry leaders say about working with DK Cyber
Trusted by Industry Leaders
Don't wait any longer and give your professional career an extraordinary turn by acquiring essential skills in one of the most exciting and in-demand fields of the moment.
"David's training methodology transformed our security team. The hands-on approach and real-world scenarios prepared us for actual threats we face daily. Highly recommended!"
Michael Chen
CEO, SecureNet
Expert Solutions
Cutting-edge cybersecurity expertise at your service
Professional Excellence
15+ years of cybersecurity mastery
Do you have any questions?
Please do not hesitate to contact us if you have any questions or concerns. Our team of experts is ready to provide you with the support you need.
"David's expertise in penetration testing helped us identify critical vulnerabilities before they cou..."
John Smith
CTO, TechCorp
"Working with DK Cyber on our fraud intelligence system was exceptional. His deep understanding of fi..."
Sarah Johnson
Security Director, FinanceBank
Video Collections
Learn cybersecurity from comprehensive video tutorials covering penetration testing, exploit development, and security best practices
250K+
Penetration Testing Tutorials
Master advanced penetration testing techniques, vulnerability assessment, and security auditing methodologies used by professionals worldwide.
Duration
15+ Hours
Subscribers
50K+
180K+
Exploit Development Series
Deep dive into exploit development, reverse engineering, and vulnerability research with hands-on practical examples.
Duration
12+ Hours
Subscribers
45K+
320K+
Cybersecurity Fundamentals
Essential cybersecurity concepts, best practices, and foundational knowledge for beginners and intermediate learners.
Duration
20+ Hours
Subscribers
65K+
150K+
Financial Fraud Intelligence
Comprehensive guide to understanding, detecting, and preventing financial fraud through advanced intelligence techniques.
Duration
10+ Hours
Subscribers
35K+
Subscribe to our YouTube channel for the latest cybersecurity tutorials
Subscribe