Security · Definition
Authentication
The process of checking that a person or system is who or what it claims to be.
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20 definitions · Website glossary
Security,
explained.
Understand identity, access, transport protection, and recovery concepts.
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Security20
20 terms available
Security · Definition
Authorization
The decision about which actions or resources an identity is allowed to access.
Understand the termSecurity · Definition
Backup
A recoverable copy of data or system state kept to support restoration after loss or unwanted change.
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Certificate authority
An organization or system that issues digital certificates within a trust framework.
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Encryption
A transformation that makes readable data unintelligible without the appropriate cryptographic key.
Understand the termSecurity · Definition
Firewall
A control that permits or blocks network traffic according to configured rules.
Understand the termSecurity · Definition
Hashing
The calculation of a fixed-size digest from input data using a hash function.
Understand the termSecurity · Definition
HTTPS
HTTP communicated over an encrypted TLS connection that protects transport between participating endpoints.
Understand the termSecurity · Definition
Incident response
A coordinated process for assessing, containing, investigating, and recovering from a suspected security incident.
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Least privilege
The principle of granting only the access needed for a person's or system's current task.
Understand the termSecurity · Definition
Malware
Software intentionally designed to compromise, disrupt, exploit, or otherwise misuse systems or data.
Understand the termSecurity · Definition
Multi-factor authentication
Authentication requiring evidence from more than one category of factor, such as something known and something possessed.
Understand the termSecurity · Definition
Phishing
A deceptive attempt to make someone reveal information or perform an action by impersonating a trusted party.
Understand the termSecurity · Definition
Recovery code
A pre-issued secret that can restore account access when a normal authentication method is unavailable.
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Restore point
A particular saved state or time to which a system or dataset can be recovered using available backups.
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Security update
A software release or patch intended to address identified security weaknesses.
Understand the termSecurity · Definition
TLS
Transport Layer Security is a protocol that provides encryption, integrity protection, and authentication for network connections.
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TLS certificate
A signed digital document that associates an identity, such as domain names, with a public key used in TLS authentication.
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Vulnerability
A weakness that can be exploited to violate a system's intended security properties.
Understand the termSecurity · Definition
Web application firewall
A control that inspects web requests and responses against rules intended to identify or block unwanted application traffic.
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Where should I start with the Security glossary?
Start with authentication and permissions, then explore HTTPS, maintenance, backups, and incident response.
- Authentication: The process of checking that a person or system is who or what it claims to be.
- Authorization: The decision about which actions or resources an identity is allowed to access.
- Backup: A recoverable copy of data or system state kept to support restoration after loss or unwanted change.
Which terms help me distinguish a security report from recovery work?
- Vulnerability: A weakness that can be exploited to violate a system's intended security properties.
- Incident response: A coordinated process for assessing, containing, investigating, and recovering from a suspected security incident.
- Restore point: A particular saved state or time to which a system or dataset can be recovered using available backups.
Which practical guides build on the Security terms?
- Build a website access inventory: Find who can change the website and its surrounding services, then connect that access to a current business responsibility.
- Review what a website backup actually covers: Compare a backup's contents and retention with the pieces needed to reconstruct the site and reconcile changes after a recovery.