Network Security

One of the biggest things I’ve learned in this course is how important it is to keep information and systems secure. Whether it’s personal data or military operations, one small security issue can cause huge problems. Two of the most common threats today are computer viruses and malware/ransomware.

Ping as an Attack

Before I get into the bigger threats, I also learned that even simple tools like the ping command can be misused. Hackers can send so many ping requests at once that it overwhelms a system, slowing it down or shutting it off. This shows how even basic commands can turn dangerous if used the wrong way.

Computer Viruses

A computer virus is a program that spreads by attaching itself to files or software. Once it’s inside a system, it can slow down performance, delete data, or even steal information. What makes viruses tricky is that they can spread quickly just by opening an infected file or plugging in the wrong USB drive. The damage can range from annoying pop-ups to serious data loss. To defend against viruses, it’s important to keep antivirus software updated, avoid downloading files from unknown sources, and run regular scans to catch problems early before they spread.

Malware and Ransomware

Malware is a broad term for harmful software, and ransomware is one of the scariest types. Ransomware locks your computer or files and demands payment to unlock them. This type of attack has hit businesses, hospitals, and even government systems. Once it’s in, it can cause massive disruptions and financial loss. The best way to defend against ransomware is by backing up important files regularly so you’re not trapped if an attack happens, keeping your operating system and software up to date with security patches, and making sure users know how to recognize suspicious links or emails, since phishing is one of the main ways ransomware spreads.

Final Thoughts

Learning about these threats showed me just how vulnerable systems can be, both at home and in the workplace. The good news is that with the right habits like updates, backups, and security awareness, we can lower the risk. In Cybersecurity, defense is all about staying one step ahead of the attackers.