TelcoSec Glossary
699+ authoritative definitions covering telecom and mobile network security: 5G, SS7, Diameter, GTP, SEPP, IMS, Open RAN, roaming, fraud, and post-quantum cryptography. Maintained by P1 Security since 2011.
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1
2
3
4
5
- 5G — Fifth Generation Mobile Network
- 5G SA — 5G Standalone
- 5G NSA — 5G Non-Standalone
- 5G SBA — 5G Service-Based Architecture
- 5GNR — 5G New Radio
- 5G-AKA — 5G Authentication and Key Agreement
- 5G Reference Points
- 5G-GUTI — 5G Globally Unique Temporary Identifier
- 5QI — 5G QoS Identifier
- 5G LAN — 5G Local Area Network service
6
8
A
- AAA — Authentication, Authorization, and Accounting
- ACL — Access Control List
- ADSL — Asymmetric Digital Subscriber Line
- AES — Advanced Encryption Standard
- A5/0 — GSM Null Cipher
- A5/1 — GSM Standard Cipher
- A5/2 — GSM Weaker Cipher
- A5/3 — GSM Modern Cipher (UEA1)
- AKA — Authentication and Key Agreement
- AMF — Access and Mobility Management Function
- AMPS — Advanced Mobile Phone System
- Anomaly Detection
- Any-Time Interrogation (ATI)
- AP — Access Point
- API — Application Programming Interface
- APT — Advanced Persistent Threat
- ARPU — Average Revenue Per User
- Artificial Traffic Inflation — Fraud Context
- ASN — Autonomous System Number
- Attack Surface Mapping
- Authentication
- Authorization
- AUSF — Authentication Server Function
- Availability
- AF — Application Function
- AKA Linkability Attack
- Account Takeover (ATO)
- APN — Access Point Name
- A1 Interface — Non-RT RIC to Near-RT RIC Interface
- AIT — Artificially Inflated Traffic
- ATSSS — Access Traffic Steering, Switching and Splitting
- AES-GCM — AES in Galois/Counter Mode
- Anycast — IP Anycast
B
- Backhaul
- Bandwidth
- Base Station (BS)
- Behavioral Signaling Detection
- BGP — Border Gateway Protocol
- BGP Hijacking
- Billing System
- Blue Team
- Botnet
- Broadband
- BSS — Business Support System
- BTS — Base Transceiver Station
- BTS Impersonation (Fake BTS)
- BSF — Binding Support Function
- Bidding-Down Attack
- BEREC — Body of European Regulators for Electronic Communications
- BGCF — Breakout Gateway Control Function
- Bypass Fraud — Interconnect Bypass Fraud
- BGP Hijack — Border Gateway Protocol Hijack
C
- CAMARA Project
- CAP — CAMEL Application Part
- Capacity Planning
- CAPEX — Capital Expenditure
- CASB — Cloud Access Security Broker
- CDMA — Code Division Multiple Access
- Cell Phone (Mobile Phone)
- Certification Authority (CA)
- CGNAT — Carrier Grade Network Address Translation
- Charging System
- Cipher
- Cipher Downgrade Attack
- CLI Spoofing — Calling Line Identification Spoofing
- Cleartext (Plain Text)
- Cloud RAN
- Conformance Testing
- Confidentiality
- Control Plane Security
- Core Network
- Core Network Security Assessment
- CPE — Customer Premises Equipment
- Cryptanalysis
- Cryptography
- CSCF — Call Session Control Function
- CSPM — Cloud Security Posture Management
- CVE — Common Vulnerabilities and Exposures
- Cybersecurity
- Chain of Custody
- CHF — Charging Function
- CU/DU/RU Split
- Carrier Aggregation
- CER Directive — Critical Entities Resilience Directive
- CSFB — Circuit-Switched Fallback
- CAPIF — Common API Framework
- CALEA — Communications Assistance for Law Enforcement Act
- CVD — Coordinated Vulnerability Disclosure
- CSIRT — Computer Security Incident Response Team
- Call Spoofing — Calling Line Identification Spoofing
- CAMEL — Customised Applications for Mobile networks Enhanced Logic
- Curve25519 — Curve25519 (X25519 ECDH)
- CC (LI) — Content of Communication
- CLI Refile — CLI Refile / A-Number Manipulation
- CRQC — Cryptanalytically-Relevant Quantum Computer
D
- Data Localization
- Dayparting
- Detection Engineering
- DDoS — Distributed Denial of Service
- Decryption
- Demarcation Point (Demarc)
- Denial of Service (DoS)
- Diameter
- Diameter Interconnect Security
- Digital Signature
- DLP — Data Loss Prevention
- DMZ — Demilitarized Zone
- DNS — Domain Name System
- DOCSIS — Data Over Cable Service Interface Specification
- DRP — Disaster Recovery Plan
- DSL — Digital Subscriber Line
- DSLAM — DSL Access Multiplexer
- Defense in Depth
- Diameter Flooding
- DSS — Dynamic Spectrum Sharing
- DPI — Deep Packet Inspection
- Deception Technology
- DNN — Data Network Name
- DTLS-SRTP — DTLS Extension to Establish Keys for SRTP
- Data Retention — Telecom Data Retention
- DEA — Diameter Edge Agent
- DetNet — Deterministic Networking
- DTLS — Datagram Transport Layer Security
- DoT — DNS over TLS
- DoH — DNS over HTTPS
- DNSSEC — Domain Name System Security Extensions
- DDoS Reflection — Reflection/Amplification Denial-of-Service Attack
E
- E.164
- E911 — Enhanced 911
- EAP — Extensible Authentication Protocol
- EDGE — Enhanced Data Rates for GSM Evolution
- EDR — Endpoint Detection and Response
- Egress
- EIR — Equipment Identity Register
- Encryption
- Endpoint
- eSIM (Embedded SIM, eUICC)
- ETSI — European Telecommunications Standards Institute
- Event Logging
- Exfiltration
- Exposure Mapping
- eSIM Profile Theft
- EECC — European Electronic Communications Code
- ENISA — European Union Agency for Cybersecurity
- ETSI ISG NFV
- ETSI ISG MEC
- EPS Fallback
- Edge Computing
- EES — Edge Enabler Server
- EEC — Edge Enabler Client
- ECS — Edge Configuration Server
- E2 Interface — O-RAN Near-RT RIC to E2 Node Interface
- E2AP — E2 Application Protocol
- E2SM — E2 Service Model
- EAP-AKA′ — Extensible Authentication Protocol – AKA Prime
- E-CSCF — Emergency Call Session Control Function
- ENUM — E.164 Number Mapping
- ETSI TS 103 221 — Internal Network Interfaces for Lawful Interception
- eUICC — Embedded Universal Integrated Circuit Card
- eMBB — enhanced Mobile Broadband
- ECDSA — Elliptic Curve Digital Signature Algorithm
F
- FASG — GSMA Fraud and Security Group
- FCC — Federal Communications Commission
- FDD — Frequency Division Duplex
- Femtocell
- Firewall
- Firmware
- Fixed Wireless Access (FWA)
- Flash Call Fraud
- Fronthaul
- Fuzzing — Telecom Protocols
- FS.07 — GSMA Reference Document
- FS.11 — GSMA Vulnerability Disclosure Framework
- FS.19 — GSMA Fraud and Security Group Recommendations
- FS.36 — 5G Interconnect Security Guidelines
- F1 Interface
- FS.20 — GPRS/GTP Security
- FS.21 — Interconnect Signalling Security Recommendations
- FS.31 — Baseline Security Controls
- FS.40 — 5G Security Guide
- Flash Call — Flash Call Authentication
G
- GGSN — Gateway GPRS Support Node
- Global Title Abuse
- GMSC — Gateway Mobile Switching Center
- GNSS — Global Navigation Satellite System
- GNSS Jamming
- GNSS Spoofing
- GPRS — General Packet Radio Service
- Grey Routing
- GRE — Generic Routing Encapsulation
- GSM — Global System for Mobile Communications
- GSMA — GSM Association
- GSMA Open Gateway
- GSMA Permanent Reference Documents (IR Series)
- GTP — GPRS Tunneling Protocol
- GTP Firewall
- GRX — GPRS Roaming Exchange
- GTP-C Spoofing
- GTP-U Smuggling
- GSMA SCAS — Security Assurance Specification
- GSMA T-ISAC — Telecommunications Information Sharing and Analysis Centre
- GPSI — Generic Public Subscription Identifier
- GBR / Non-GBR Bearers
- GUAMI — Globally Unique AMF Identifier
- GDPR — General Data Protection Regulation
- Grey Route — SMS Grey Route
- GBA — Generic Bootstrapping Architecture
- GTP-U — GTP User Plane
- GTP-C — GTP Control Plane
- GUTI — Globally Unique Temporary Identifier
- Grey Route SMS — Grey-Route SMS
- GTP Security — GPRS Tunneling Protocol Security
H
- Handoff (Handover)
- HDSL — High-Bit-Rate Digital Subscriber Line
- HI1 — Lawful Interception (Handover Interface 1)
- HI2 — Lawful Interception (Handover Interface 2)
- HI3 — Lawful Interception (Handover Interface 3)
- HLR — Home Location Register
- HLS — HTTP Live Streaming
- HTTP/2 Security in 5G
- HSS — Home Subscriber Server
- HTTP — Hypertext Transfer Protocol
- HTTPS — HTTP Secure
- Hardening
- HKDF — HMAC-based Key Derivation Function
- HMAC-SHA256 — Keyed-Hash Message Authentication Code with SHA-256
- Hybrid KEM — Hybrid Post-Quantum / Classical KEM
- HNDL — Harvest-Now-Decrypt-Later
I
- IAP — Intercept Access Point
- IAMF — Identity and Access Management Framework
- IBCF — Interconnection Border Control Function
- ICCID — Integrated Circuit Card Identifier
- ICT — Information and Communications Technology
- ICMP — Internet Control Message Protocol
- IDS — Intrusion Detection System
- IETF — Internet Engineering Task Force
- IGW — Internet Gateway
- ILEC — Incumbent Local Exchange Carrier
- IMS — IP Multimedia Subsystem
- IMEI — International Mobile Equipment Identity
- IMSI — International Mobile Subscriber Identity
- IMSI Catcher (Cell Site Simulator)
- Indicators of Compromise (Telecom IoCs)
- IN — Intelligent Network
- Incident Response
- Ingress
- Insider Threat
- Integrity
- Interconnection
- Interconnect Security Model
- Inter-Network Function Authentication
- Inter-PLMN Security
- IoT — Internet of Things
- IP — Internet Protocol
- IP Address
- IPS — Intrusion Prevention System
- IPv6
- IPsec — IP Security
- IRSF — International Revenue Share Fraud
- ISDN — Integrated Services Digital Network
- iSIM — Integrated SIM
- ISP — Internet Service Provider
- ISUP — ISDN User Part
- ITU — International Telecommunication Union
- IVR — Interactive Voice Response
- IPX — IP Packet Exchange
- Interconnect Bypass Fraud
- IPUPS — Inter-PLMN UP Security
- IMS-AKA — IMS Authentication and Key Agreement
- I-CSCF — Interrogating Call Session Control Function
- IR.92 — GSMA IR.92 IMS Profile for Voice and SMS
- IR.94 — GSMA IR.94 IMS Profile for Video Telephony
- IR.21 — Roaming Data Sheet
- IKEv2 — Internet Key Exchange version 2
- IRI — Intercept Related Information
J
K
L
- LA — Location Area
- LAN — Local Area Network
- Last Mile
- Latency
- Lawful Interception
- Lawful Interception Abuse Risk
- Lawful Interception Architecture
- LEO — Low Earth Orbit (Satellite)
- Location Tracking Attacks
- LTE — Long Term Evolution
- LTE-Advanced (LTE-A)
- Local Loop Unbundling (LLU)
- Lateral Movement (Telecom)
- Lawful Intercept — Lawful Interception
- LTE-M — LTE for Machines (Cat-M1)
M
- MAC — Medium Access Control
- MAC Address
- MAC Filtering
- Machine Learning (ML)
- Malware
- Man-in-the-Middle (MITM)
- Management Plane
- Massive MIMO
- MAP — Mobile Application Part
- MAP Security
- MCC — Mobile Country Code
- MEC — Multi-Access Edge Computing
- Media Gateway
- Mediation Device (Lawful Interception)
- Mediation System
- Metadata
- Metadata Retention
- Mitigation
- MNC — Mobile Network Code
- Mobile Network
- MNO — Mobile Network Operator
- MNP — Mobile Number Portability
- Modulation
- Monitoring
- MPLS — Multiprotocol Label Switching
- MSC — Mobile Switching Center
- MTBF — Mean Time Between Failures
- mTLS — Mutual TLS
- MTTR — Mean Time To Recovery
- MUX — Multiplexer
- MVNO — Mobile Virtual Network Operator
- MSSP — Managed Security Service Provider
- MDR — Managed Detection and Response
- MITRE FiGHT — 5G Hierarchy of Threats
- MITRE D3FEND
- Midhaul
- MEC Security
- MGCF — Media Gateway Control Function
- MTSI — Multimedia Telephony Service for IMS
- mMTC — massive Machine-Type Communications
- MDAF — Management Data Analytics Function
- MACsec — Media Access Control Security (IEEE 802.1AE)
- MDF2 — Mediation and Delivery Function 2 (IRI)
- MDF3 — Mediation and Delivery Function 3 (CC)
- MPLS-TE — MPLS Traffic Engineering
- ML-KEM — Module-Lattice-Based Key-Encapsulation Mechanism (FIPS 203)
- ML-DSA — Module-Lattice-Based Digital Signature Algorithm (FIPS 204)
N
- N32 Interface (5G)
- NAC — Network Access Control
- NAT — Network Address Translation
- NB-IoT — Narrowband IoT
- NESAS — Network Equipment Security Assurance Scheme
- Network Exposure Function (NEF)
- Network Slicing
- NIST — National Institute of Standards and Technology
- Noise
- NOC — Network Operations Center
- NPAI — Network Provided Calling Line Identification Presentation
- NRA — National Regulatory Authority
- NRF — Network Repository Function
- NSA — National Security Agency
- NTP — Network Time Protocol
- NTN — Non-Terrestrial Networks
- Numbering Plan
- NRF Poisoning
- N32 Tampering
- NWDAF — Network Data Analytics Function
- N3IWF — Non-3GPP Interworking Function
- NDR — Network Detection and Response
- NTA — Network Traffic Analysis
- NetFlow / IPFIX / sFlow
- NIS2 Directive — Network and Information Security Directive 2
- N32-c — N32 Control Plane
- N32-f — N32 Forwarding Plane
- NSSF — Network Slice Selection Function
- NSSAI — Network Slice Selection Assistance Information
- Near-RT RIC — Near-Real-Time RAN Intelligent Controller
- Non-RT RIC — Non-Real-Time RAN Intelligent Controller
- Number Portability — Mobile / Local Number Portability
- NAF — Network Application Function
- NGAP — NG Application Protocol
- N1 — N1 Reference Point
- N2 — N2 Reference Point
- N4 — N4 Reference Point
- N6 — N6 Reference Point
- N9 — N9 Reference Point
- Network Slice — 5G Network Slice
- N3 — N3 Reference Point (gNB to UPF)
- N11 — N11 Reference Point (AMF to SMF)
- N12 — N12 Reference Point (AMF to AUSF)
- N8 — N8 Reference Point (AMF to UDM)
- N2 Handover — N2-based Handover
O
- OAuth2 in 5G Core
- OASIS — Organization for the Advancement of Structured Information Standards
- OAM — Operations, Administration, and Maintenance
- OCS — Online Charging System
- OCSP — Online Certificate Status Protocol
- OFDM — Orthogonal Frequency Division Multiplexing
- OFDMA — Orthogonal Frequency Division Multiple Access
- OFCS — Offline Charging System
- Open RAN
- OpenSSL
- Operating System (OS)
- Operational Expenses (OPEX)
- Operational Security (OPSEC)
- Order Management
- OSPF — Open Shortest Path First
- OSS — Operations Support System
- OT — Operational Technology
- OTA — Over The Air
- OTP Bypass Attacks
- OAM Compromise
- O-RAN Alliance
- O-RAN Interfaces (A1, E2, O1, O2)
- OTT Bypass
- O-CU — O-RAN Centralized Unit
- O-DU — O-RAN Distributed Unit
- O-RU — O-RAN Radio Unit
- O1 Interface — O-RAN Management Interface
- O2 Interface — O-RAN SMO to O-Cloud Interface
- Open Fronthaul — O-RAN 7-2x Fronthaul Interface
- O-Cloud — O-RAN Cloud Platform
- ONAP — Open Network Automation Platform
P
- Packet
- Paging Attacks
- Patch
- PBX — Private Branch Exchange
- PBX Hacking
- PDN — Packet Data Network
- PGW — Packet Data Network Gateway
- PHY — Physical Layer
- PLMN — Public Land Mobile Network
- PoE — Power over Ethernet
- PRD — Permanent Reference Document
- Private 5G
- Privacy by Design
- Provide Subscriber Information (PSI)
- PSTN — Public Switched Telephone Network
- Pentest — Penetration Testing
- Patch Management
- Purple Team
- PEI — Permanent Equipment Identifier
- Piercer Attack
- Port-Out Fraud
- PBX Dial-Through Fraud
- PCAP — Packet Capture
- PRINS — PRotocol for N32 INterconnect Security
- PLMN ID — Public Land Mobile Network Identifier
- P-CSCF — Proxy Call Session Control Function
- P-Asserted-Identity — P-Asserted-Identity Header (RFC 3325)
- PFCP — Packet Forwarding Control Protocol
- PCF — Policy Control Function
- PDU Session Modification — PDU Session Modification Procedure
- P-CSCF Discovery — Proxy-CSCF Discovery
- PBX Toll Fraud — PBX Hacking / Toll Fraud
- PQC Migration — Post-Quantum Cryptography Migration
Q
R
- RADIUS — Remote Authentication Dial In User Service
- RAN — Radio Access Network
- Red Team
- Revenue Assurance
- RF — Radio Frequency
- RFID — Radio Frequency Identification
- Roaming
- Roaming Interconnect Security
- Roaming Security Assessment
- Roaming Security Architecture
- Robocalling
- Rogue Base Station (Fake BTS)
- RRH — Remote Radio Head
- RPKI — Resource Public Key Infrastructure
- RSA — Rivest-Shamir-Adleman
- RTP — Real-time Transport Protocol
- RTSP — Real Time Streaming Protocol
- Red Team Exercise
- Risk Assessment
- RIC — RAN Intelligent Controller
- rApp
- Refile Fraud
- RCS — Rich Communication Services
- Revenue Share Fraud — International Revenue Share Fraud (IRSF Model)
- Refile — Interconnect Refile
- RSP — Remote SIM Provisioning
- RANAP — Radio Access Network Application Part
- ROA — Route Origin Authorization
- RPKI-to-Router — RPKI-to-Router Protocol (RTR)
- Registration Update (5G) — Mobility/Periodic Registration Update
- Rx Interface — Rx Diameter Reference Point
- Rf / Ro — Diameter Charging Reference Points
S
- SAS — GSMA Security Accreditation Scheme
- SBAS — Satellite-Based Augmentation System
- SC — Signaling Connection
- SCADA — Supervisory Control and Data Acquisition
- SCN — Service Creation Node
- SDSL — Symmetric Digital Subscriber Line
- SECA — Security Administration
- SEPP — Security Edge Protection Proxy
- Service-Based Architecture (SBA) Security
- SGSN — Serving GPRS Support Node
- SHA — Secure Hash Algorithm
- SHR — Shared Resource
- Signaling Firewall
- Signaling IDS
- Signaling Penetration Testing
- Signaling Screening
- SID — Service Identifier
- SIM — Subscriber Identity Module
- SIMBox Fraud
- Silent SMS
- SIP — Session Initiation Protocol
- SIR — Signal-to-Interference Ratio
- SIRT — Security Incident Response Team
- SLA — Service Level Agreement
- SLI — Service Level Indicator
- Slice Isolation (5G)
- Slice Security
- SM — Session Manager
- SMF — Session Management Function
- SMPP — Short Message Peer-to-Peer
- SMS — Short Message Service
- SMS Home Routing
- SMS Pumping
- SMS Spoofing (Interconnect)
- SMSC — Short Message Service Center
- SNMP — Simple Network Management Protocol
- SNR — Signal-to-Noise Ratio
- SOC — Security Operations Center
- Spam
- SRI — Send Routing Information
- SS7 — Signaling System No. 7
- SS7 Interconnect Security
- SSID — Service Set Identifier
- SSH — Secure Shell
- SSL — Secure Sockets Layer (deprecated)
- STIR — Secure Telephone Identity Revisited
- Subnet
- Subscriber
- SUCI — Subscription Concealed Identifier
- SUPI — Subscription Permanent Identifier
- SIM Swap
- SOAR — Security Orchestration, Automation and Response
- SBOM — Software Bill of Materials
- SCP Abuse
- SBA Token Forgery
- Slice Hopping
- Smishing
- SECAM — Security Assurance Methodology
- SCP — Service Communication Proxy
- SUPI Concealment
- SMO — Service Management and Orchestration
- SUPI Catcher
- SS7 Message Categories
- SMSC Hijacking
- Subscription Fraud
- Sigma Rules
- Suricata
- Sinkhole
- SEAL — Service Enabler Architecture Layer
- SBA — Service-Based Architecture
- SBI — Service-Based Interface
- S-NSSAI — Single Network Slice Selection Assistance Information
- S-CSCF — Serving Call Session Control Function
- Session Border Controller (SBC) — Session Border Controller
- SRVCC — Single Radio Voice Call Continuity
- SRTP — Secure Real-time Transport Protocol
- SIM Box — SIM Box (GSM Gateway)
- STIR/SHAKEN — Secure Telephone Identity Revisited / Signature-based Handling of Asserted information using toKENs
- SM-DP+ — Subscription Manager Data Preparation Plus
- SM-SR — Subscription Manager Secure Routing
- S1AP — S1 Application Protocol
- SEAF — SEcurity Anchor Function
- Satellite Backhaul — Satellite Transport Backhaul
- Segment Routing — Segment Routing (SR)
- SRv6 — Segment Routing over IPv6
- Service Request (5G) — 5G Service Request Procedure
- SIP Digest — SIP Digest Authentication
- SLH-DSA — Stateless Hash-Based Digital Signature Algorithm (FIPS 205)
- SEPP Security — Security Edge Protection Proxy Security
T
- TAC — Terminal Access Controller
- TAP — Telecommunications Analysis Service
- TCP — Transmission Control Protocol
- TCP/IP
- TCAP — Transaction Capabilities Application Part
- TCAP Abuse
- TDD — Time Division Duplex
- TDMA — Time Division Multiple Access
- TEID — Tunnel Endpoint Identifier
- Telecom — Telecommunications
- Telecom Attack Surface Mapping
- Telecom Penetration Testing
- Telecom SIEM
- Telnet
- TETRAPOL
- Threat Intelligence — Telecom-Specific
- Threat-Led Assessment
- TLS — Transport Layer Security
- TM Forum — TeleManagement Forum
- TM Forum Open APIs
- TMSI — Temporary Mobile Subscriber Identity
- TMSI Reallocation
- Toll Bypass
- Toll Fraud
- TPS — Telecom Policy Service
- TR-069 — CPE WAN Management Protocol
- Traffic Baselining
- Traffic Engineering
- Transcoding
- Trunk
- TTC — Telephone Terminal Channel
- TTL — Time To Live
- Threat Hunting (Telecom)
- Threat Modeling
- Tabletop Exercise
- Telecom Forensics
- Telecom Reconnaissance
- TNGF — Trusted Non-3GPP Gateway Function
- Torpedo Attack
- Telecom Honeypot
- TM Forum ODA — Open Digital Architecture
- TrGW — Transition Gateway
- Third-Party Registration — SIP Third-Party REGISTER
- Traffic Pumping — Access Stimulation / Traffic Pumping
- TSN — Time-Sensitive Networking
- TSC — Time-Sensitive Communications
- TLS 1.3 — Transport Layer Security 1.3
U
- UDP — User Datagram Protocol
- UDM — Unified Data Management
- UEA — User Equipment Algorithm
- UMTS — Universal Mobile Telecommunications System
- USIM — Universal Subscriber Identity Module
- UPF — User Plane Function
- User Plane Security
- UDR — Unified Data Repository
- UDSF — Unstructured Data Storage Function
- UEBA — User and Entity Behavior Analytics
- URSP — UE Route Selection Policy
- URLLC — Ultra-Reliable Low-Latency Communications
- UE Policy — UE Policy Delivery (5G)
V
- VDSL — Very High Speed Digital Subscriber Line
- VLR — Visitor Location Register
- VLAN — Virtual Local Area Network
- VoIP — Voice over IP
- VoLTE — Voice over LTE
- VPN — Virtual Private Network
- VRAN — Virtual Radio Access Network
- vSIM — Virtual SIM
- Vulnerability Assessment
- Vulnerability Management
- Vishing
- VoNR — Voice over New Radio
- VoWiFi — Voice over Wi-Fi
W
- Wangiri Fraud
- WAN — Wide Area Network
- WCDMA — Wideband Code Division Multiple Access
- WPA — Wi-Fi Protected Access
- WPA2 — Wi-Fi Protected Access 2
- WPA3 — Wi-Fi Protected Access 3
- WEP — Wired Equivalent Privacy
- Wangiri — One-Ring Callback Fraud
- WireGuard — WireGuard VPN Protocol
- Wangiri 2.0 — Wangiri 2.0 (Web-Initiated Callback Fraud)
X
- X.25
- X.500
- X.509
- xDSL — Generic DSL
- XMPP — Extensible Messaging and Presence Protocol
- XDR — Extended Detection and Response
- xApp
- Xn Interface
- XnAP — Xn Application Protocol
- X1 — Lawful Interception X1 Interface (ETSI TS 103 221-1)
- X2 (LI) — Lawful Interception X2 Interface — Intercept Related Information
- X3 (LI) — Lawful Interception X3 Interface — Content of Communication
- Xn Handover — Xn-based Handover