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Glossary: Cybersecurity Terms & Definitions

Learn the lingo. Find definitions and learn about the general application of common industry terms as they are used on this website.

A

ActiveX ›

Access Control ›

Access Control List (ACL) ›

Account Takeover (ATO) ›

Active/Active Configuration ›

Active Directory ›

Adaptive applications ›

Address Resolution Protocol (ARP) ›

Advanced compression ›

Advanced Encryption Standard (AES) ›

Adversarial AI ›

Agentic AI ›

AI and ML Inference ›

AI Foundry ›

AJAX (Asynchronous JavaScript and XML) ›

Anti-phishing ›

API connectivity›

API developer experience ›

API first ›

API gateway ›

API Management ›

API security ›

API sprawl ›

API testing ›

Application acceleration ›

Application accelerator ›

Application delivery ›

Application delivery controller ›

Application firewall ›

Application intelligence ›

Application layer firewall ›

Application layer gateway ›

Application layer security ›

Application security ›

Application server vs web server ›

Application services ›

Application traffic manager ›

Artificial Intelligence Factory ›

Asymmetric deployment ›

AWS Multicloud Strategies ›

B

Bandwidth ›

Border Gateway Protocol (BGP) ›

Bot management, mitigation, and protection ›

Bot mitigation ›

Bot security ›

Brute force attack ›

Buffer overflow ›

Business Email Compromise (BEC) ›

C

Caching ›

CDN (Content Delivery Network) ›

CIFS SMB ›

Certificate Authority (CA) ›

Certificate Signing Request (CSR) ›

Challenge-Response Authentication Method ›

Client Certificate ›

Clientless remote access ›

Cloud infrastructure ›

Cloud load balancing ›

Cloud native app delivery ›

Cloud Operating System ›

Clustering ›

Command Injection ›

Connection flood ›

Container ›

Content Filtering›

Content Server ›

Control plane ›

Cookie poisoning ›

Credential ›

Credential Stuffing ›

Cross-Site Request Forgery (CSRF) ›

Cross-site scripting ›

Cyberattacks ›

Cybersecurity ›

D

Data integrity ›

Data layer security ›

Data plane ›

Data processing unit (DPU) ›

Delivery networking ›

Denial of service ›

Denial of service tool›

Diameter edge agent (DEA) ›

Diameter interfaces ›

Diameter load balancer ›

Diameter protocol ›

Diameter routing agent (DRA) ›

Dictionary attack ›

Digital Certificate ›

Directory Traversal ›

Direct Server Return (DSR) ›

Disaster recovery/business continuity ›

Distributed Cloud ›

Distributed Cloud Computing ›

DDoS (Distributed Denial-of-Service) ›

DDoS Mitigation ›

DMZ (Demilitarized Zone) ›

DNS flood: NXDOMAIN flood ›

DNS flood: query flood ›

DNS Load Balancing ›

DNS Round Robin ›

DNS zone transfer›

Domain Name System Security Extensions (DNSSEC)›

DTLS (Datagram Transport Layer Security) ›

Dynamic Application Security Testing (DAST)›

E

Edge AI ›

Edge Computing ›

Spam Email ›

Endpoint security ›

Escape Processing ›

EV SSL Certificates ›

Extensible Markup Language (XML) ›

Extranet access control ›

F

Failover ›

False Positive ›

Falsification ›

Federation ›

File server consolidation ›

File Transfer Protocol (FTP) ›

Firewall Security ›

Forced Browsing ›

Forward Proxy ›

Foundational AI Models ›

Fraud Detection ›

Fully Qualified Domain Name (FQDN) ›

G

Geolocation ›

Generative AI ›

GET flood ›

GET Method ›

Global namespace ›

Global server load balancing ›

graphql ›

Graphics Processing Unit (GPU) ›

H

Hash DoS attack ›

Health Check ›

High availibility ›

Hypertext Transfer Protocol (HTTP) ›

HTTP 1.0 ›

HTTP 1.1 ›

HTTP Compression ›

HTTP Header Injection ›

Hostname ›

Hybrid Cloud ›

Hybrid Cloud Architecture ›

Hypervisor ›

Hybrid Cloud Networking ›

Hybrid Cloud Security ›

Hybrid load balancing ›

I

Internet Control Message Protocol (ICMP) ›

ICMP flood, Ping flood, Smurf attack ›

Illegal Money Remittance ›

Independent Computing Architecture (ICA) ›

Infrastructure as a Service (IaaS) ›

Intelligent compression ›

Intermediate Certificates ›

Internet traffic management ›

Infrastructure as code (IAC) ›

IPsec (Internet Protocol Security) ›

IPv6 (Internet Protocol Version 6) ›

Intrusion Detection System (IDS) ›

Intrusion Prevention System (IPS) ›

IMS (IP Multimedia Subsystem) ›

IWF (Interworking Function) ›

IPsec VPN ›

IPv6 gateway ›

IPv6 proxy ›

J

K

KeepAlive ›

Keylogger ›

Kubernetes ›

Kubernetes ingress controller ›

L

L4 Switch ›

L7 Switch ›

Latency ›

Layer 4 load balancing ›

Layer 7 load balancing ›

Least Connection ›

Link Aggregation Control Protocol (LACP)›

Live Migration ›

LLM (Large Language Models) ›

Load balancer ›

N

Name Resolution ›

Network Address Port Translation (NAPT) ›

Network Address Translation (NAT) ›

NAS (Network Attached Storage) ›

Network availability ›

NFS (Network File System) ›

Network load balancer ›

NMS (Network Management Station) ›

Network Time Protocol (NTP) ›

Network traffic management ›

Network Virtualization using Generic Routing Encapsulation (NVGRE) ›

Next-Generation Firewall ›

O

OID (Object Identifier) ›

Observability ›

One-arm Configuration ›

One-Time Password (OTP) ›

Open Banking ›

Open Source Software (OSS) ›

Open SSL ›

Open telemetry ›

OpenFlow ›

Orchestrator ›

Overlay Network ›

OWASP API Security Top 10 Overview & Best Practices ›

OWASP Automated Threats ›

P

Packet Filtering ›

Passive Mode (FTP) ›

Password List Attack ›

PC over IP (PCoIP) ›

PCI (Payment Card Industry Data Security Standard) ›

Persistance ›

Physical Layer ›

Pipeline Processing›

Platform engineering ›

Platform ops ›

Policy enforcement ›

Port Address Translation (PAT) ›

POST Method ›

Progressive download ›

Public Key ›

Public Key Infrastructure (PKI) ›

PUSH and ACK flood ›

Q

QoS (Quality of Service) ›

Quarantine Network ›

quic http3 ›

S

Scraping ›

SCTP (Stream Control Transmission Protocol) ›

Secret Key ›

Secure application delivery ›

Secure Coding ›

Secure Network Address Translation (SNAT) ›

Secure remote access ›

Security Assertion Markup Language (SAML) ›

Security breaches ›

Security Information and Event Management (SIEM) ›

Self-signed Certificate ›

Server Certificate ›

Service Chaining ›

Service Mesh ›

Service oriented architecture ›

SIP (Session Initiation Protocol) ›

Session Management ›

Sesssion persistence ›

Sidecar ›

Signature ›

Single Sign-On (SSO) ›

SIP proxy ›

SIP proxy server ›

SIP VoIP gateway ›

Site reliability engineering ›

Site-to-site VPN ›

SLA (Service-Level Agreement) ›

Slowloris ›

SNMP (Simple Network Management Protocol) ›

SOA (Service Oriented Architecture) ›

SOAP (Simple Object Access Protocol) ›

Software bill of materials (SBOM) ›

Software as a Service (SaaS) ›

Software-Defined Networking (SDN) ›

Spoofing ›

SQL injection ›

SSL acceleration ›

SSL bridging ›

SSL decryption ›

SSL flood and SSL renegotiation attacks ›

SSL load balancer ›

SSL offloading ›

SSL termination ›

SSL/TLS encryption ›

SSL VPN ›

SYN flood ›

T

Teardrop attack ›

Telecommunications industry organizations ›

Threat Stack ›

Time to Live (TTL) ›

Traffic management ›

Traffic shaping ›

Transport Layer ›

U

User Datagram Protocol (UDP) ›

UDP flood ›

Unified Threat Management (UTM) ›

Uniform Resource Identifier (URI) ›

Universal access controller ›

Universal access manager ›

URL Filtering ›

User-Agent ›

V

Vector Database ›

Virtual Appliances ›

Virtual Desktop Infrastructure (VDI) ›

Virtual eXtensible Local Area Network (VXLAN) ›

Virtual Hosting ›

Virtual LAN (VLAN) ›

VLAN ID ›

VLAN Tag ›

Virtual Network ›

Virtual private network (VPN) ›

W

WAF (Web application firewall) ›

WAN acceleration ›

WAN Accelerator ›

Web 2.0 ›

Web acceleration ›

Web App and API Protection ›

Web application performance ›

Web application security ›

Web performance ›

Web server ›

Web server performance ›

WebSocket ›

Wireless network security ›

X

XML (Extensible Markup Language) ›

XML firewall ›

Y

Z

Zero Trust ›

Zero Trust Architecture ›