Cybersecurity is the practice of protecting systems, networks, and data from digital attacks. It spans encryption techniques, network defenses, and threat detection — all aimed at keeping information confidential, intact, and available.
End-to-end encryption ensures that data is readable only by the intended recipient, while firewalls filter network traffic to block unauthorized access. Understanding common attack methods like brute force attacks is key to building effective defenses.
Cryptographic hash functions like SHA-256 underpin many security systems, from password storage to blockchain integrity. These concepts form the foundation of trust in digital systems.