TLDR:
The article emphasizes the importance of Operational Security (OpSec) in safeguarding both digital and physical aspects of our lives. 
Key Points:
- OpSec Basics: Understanding what OpSec is and why it matters in daily life.
- Digital Security: Tips for protecting personal information online.
- Physical Security: Strategies to enhance safety in the real world.
- Awareness: The need for constant vigilance in both digital and physical environments.
- Practical Steps: Simple actions everyone can take to improve their security posture.
In-depth summary:
The article titled “The Vital Role of OpSec in Everyday Life: Building Your Digital and Physical Fortress” discusses the critical role of Operational Security (OpSec) in our increasingly interconnected world. It highlights that OpSec is not just for professionals or those in high-risk situations; rather, it is essential for everyone to protect their personal information and maintain privacy. The author outlines the fundamental principles of OpSec, emphasizing that awareness and proactive measures are key to safeguarding oneself.
In the digital realm, the article provides practical advice on how to secure personal data, such as using strong passwords, enabling two-factor authentication, and being cautious about sharing information online. It stresses the importance of understanding the potential risks associated with various online activities and how to mitigate them effectively.
On the physical side, the article suggests strategies for enhancing personal safety, such as being aware of one’s surroundings, securing one’s home, and being cautious about sharing personal details in public spaces. The overarching message is that by integrating OpSec practices into daily routines, individuals can create a robust fortress that protects both their digital and physical lives.
ELI5:
OpSec is like having a secret hideout where you keep your treasures safe. It teaches you how to protect your important stuff, like your online accounts and your home, from bad guys. You can do things like use strong passwords and be careful about what you share with others to keep everything safe and sound! 
Writers main point:
The primary point of the article is that everyone should take OpSec seriously to protect their personal information and ensure their safety in both digital and physical spaces.