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Security Beginner

What is Encryption?

The process of converting readable data into an unreadable format using algorithms, reversible only with the correct key.

Encryption protects data confidentiality. Symmetric encryption (AES, ChaCha20) uses one key for both encryption and decryption — fast but requires secure key exchange. Asymmetric encryption (RSA, ECC) uses a public/private key pair — slower but enables secure key exchange.

Data should be encrypted at rest (stored data) and in transit (network traffic via TLS). Never implement custom encryption — use established libraries and algorithms.

Related Terms

DDoS (Distributed Denial of Service)
An attack that floods a target server or network with traffic from multiple sources to overwhelm it and deny service to legitimate users.
Supply Chain Attack
A cyberattack that targets less-secure elements in the software supply chain to compromise downstream users and organizations.
Vulnerability Scanning
Automated testing that identifies known security weaknesses in systems, applications, and network infrastructure.
Firewall Rules
Configuration entries that define which network traffic is allowed or blocked based on source, destination, port, and protocol.
CSRF (Cross-Site Request Forgery)
An attack that tricks authenticated users into submitting unwanted requests to a web application they are logged into.
SOC (Security Operations Center)
A centralized team and facility responsible for monitoring, detecting, analyzing, and responding to cybersecurity threats 24/7.
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