What is Cybersecurity and Why it Matters?
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What is Cybersecurity?
Cybersecurity is the practice of protecting systems, networks, and data from digital attacks. As everything moves online, it's one of the most critical and in-demand fields in tech.
The CIA Triad
| Principle | Meaning |
|---|---|
| Confidentiality | Only authorized access |
| Integrity | Data isn't tampered with |
| Availability | Systems stay accessible |
Common Threats
- Phishing — fake emails stealing credentials.
- Malware — viruses, ransomware.
- SQL injection — attacking databases.
- DDoS — overwhelming servers with traffic.
Cybersecurity Domains
- Network security.
- Application security.
- Cloud security.
- Ethical hacking / penetration testing.
FAQs
Is cybersecurity a good career?
Excellent — high demand, strong pay, and a global skills shortage. More in our Security guides.
Where do I start?
Learn networking, Linux, and the OWASP Top 10 vulnerabilities.