Today’s world runs on networks—just like a neighborhood with roads, doors, and keys. In cybersecurity class at San Diego Continuing Education, we explored how to keep those digital neighborhoods safe. Think of your home: you lock your doors, close the windows, and maybe have an alarm system. That’s what network security does for your computer systems.
For example, we talked about attack surfaces—these are like entry points to your home: front door, windows, even your doggy door. In computers, it could be open ports, weak passwords, or even human mistakes. Shrinking that surface means fewer ways for the “bad guys” to sneak in.
Zero Trust was another key lesson. It’s like not letting anyone into your house—even if they have a key—unless you really know who they are, where they came from, and if they’re supposed to be there. This model constantly checks if a user or device is safe, based on location, device type, and other factors.
We also learned about honeypots, which are fake computer systems set up to attract hackers—like putting a fake wallet in a park to see who tries to steal it. It helps defenders learn how attacks work.
And here’s a fun example: port mirroring is like putting a security camera on a hallway mirror—letting us watch what’s going on without being seen. It helps network analysts monitor without interfering.
These concepts may sound technical, but they all aim to protect your privacy, identity, and data. Just like locking your house or having a watchdog, cybersecurity works in layers.
Later tonight, I’ll be hitting the gym for a 45-minute workout at 7:30PM. Strengthening the body and the mind—because both matter in this journey.
–Jeremiah
Think Positive Cyber 
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