Hi, I'm Charles.
My entrepreneurial journey has spanned nearly three decades, filled with failures, successes, and invaluable lessons. Here I offer the Grit & Grind newsletter and security consulting to help companies build effective security teams.
Welcome to Grit & Grind!
Grit & Grind is a no-nonsense newsletter for business leaders build and scale effective security teams.
Why Grit & Grind Exists
Security is often seen as the team or department that blocks or slows progress and my goal is to change that. Security can and must move at the speed of the business through modern risk management processes. Say goodbye to the gates and embrace well design work streams and other low risk, high velocity controls that enable security teams to stop being the bottleneck and start enabling the business.
What You’ll Find Here
Grit & Grind is a space for real, unfiltered stories and actionable advice for security teams. Built on decades of hard-won experience, this platform is designed to inspire resilience, guide improvements and connect leaders.
Every part of Grit & Grind delivers:
- Authentic Stories: Real-life accounts of failures and triumphs from myself and other security leaders.
- Actionable Insights: Lessons and strategies you can apply to your own business.
- Inspiration and Encouragement: Honest advice to help you stay resilient through challenges.
- Community: A space for leaders to connect, share, and support each other.
- Security Advisory: Expert consulting to help businesses secure their digital assets and maintain trust.
- Online Courses: Comprehensive, practical courses designed to teach scalable security practices.
Free Live Security Workshop
Join us at our exclusive online workshop for busy founders and technical leads.
This is a zero ‘fluff’, highly practical workshop where we'll cover:
- Understanding the Threat Landscape
- Implement Strong Authentication Mechanisms
- Secure Your Data
- Conduct Regular Security Assessments
- Establish a Robust Incident Response Plan
- Q&A Session
What our customers say
“In my opinion Charles is the leading CISO in Japan. Having worked for Facebook Japan, Mastercard Japan, Starbucks Japan, I feel I have had the privilege of working with amazing CISO’s. But Charles stands ahead of the pack due to his experience , technical capability in both strategy and execution and his ability to navigate the Japanese legacy infrastructure and decision making process. His energy always brings passion to all projects - his ability to work with different teams and types of people with a joyful manner is why Charles always succeeds to execute in all environments.”
“Engaging SimplyCubed as a 3rd party allowed us to independently review and fix security flaws in the design of our product that had been overlooked by our developers. As a result, we have a more robust product that allows us to confidently state that it is the most secure product in our marketspace. With solid Fintech experience, Charles understands our client base and has geared their solution accordingly.”
"Successfully launched our initial product for hospitals and healthcare facilities in Japan. It's always important to prioritize security when building products, especially in sensitive industries like healthcare. Our team was able to leverage the expertise of Charles Green, who provided us with valuable security recommendations to implement security standards and achieve our goals."