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Cybersecurity is the practice of protecting computers, servers, mobile devices, electronic systems, networks, and data from digital attacks, theft, or unauthorized access.As modern society becomes deeply dependent on the internet, cloud computing, and connected devices, safeguarding digital infrastructure is essential for personal privacy, corporate stability, and national security.1. The Core Pillars of CybersecurityCybersecurity rests on foundational principles designed to keep information trustworthy and accessible. These are often summarized through the CIA Triad:

• Confidentiality: Ensuring that sensitive data is only accessible to authorized individuals and hidden from spies or hackers.
• Integrity: Guaranteeing that data is trustworthy, accurate, and has not been altered or tampered with maliciously.
• Availability: Making sure that systems, networks, and data remain operational and accessible to legitimate users whenever needed.

Beyond the triad, modern frameworks emphasize Authentication (verifying who a user or device is) and Non-repudiation (ensuring actions cannot be denied).2. Major Cybersecurity ThreatsThe digital landscape features a wide range of threat actors, from solitary script-kiddies to state-sponsored espionage groups and organized criminal syndicates. The most common threats include:

• Malware: Malicious software—such as viruses, worms, trojans, and spyware—designed to damage or infiltrate a system.
• Ransomware: A type of malware that locks or encrypts a victim's files, demanding a ransom (often in cryptocurrency) to restore access. Human-operated ransomware attacks have grown exponentially in recent years.
• Phishing and Social Engineering: Deceptive emails, text messages (smishing), or phone calls that trick individuals into revealing passwords, financial details, or personal data.
• Denial of Service (DoS / DDoS): Overwhelming servers or network bandwidth with massive floods of traffic to knock websites or services offline.
• Man-in-the-Middle (MitM) Attacks: Intercepting communications between two parties to steal data or inject malicious instructions.
• Supply Chain Attacks: Hacking into a less-secure vendor or software provider to compromise all of their downstream customers and partners.