English Glossaries of Cybersecurity Terms

ISACA (Information Systems Audit and Control Association, global)

NIST (National Institute of Standards and Technology, US)

CISA (Cybersecurity and Infrastructure Security Agency), NICCS (National Initiative for Cybersecurity Careers and Studies), US

The Ohio State University (US)

The University of Texas at Austin (US)

ENISA (European Union Agency for Cybersecurity):

1. https://www.enisa.europa.eu/topics/threat-risk-management/risk-management/current-risk/bcm-resilience/glossary
2. https://www.enisa.europa.eu/topics/csirts-in-europe/glossary
3. https://www.enisa.europa.eu/media/media-press-kits/enisa-glossary

National Cyber Security Centre (UK)

Get Safe Online (UK)

The Canadian Centre for Cyber Security (CA)

DND.GOV.PH (Department of National Defence, Republic of Philippines)

TIM MAURER & ROBERT MORGUS Compilation of Existing Cybersecurity and Information Security Related Definitions (New America)

BSI

Duo Security, CISCO

Cybrary

CyberPolicy

Defendify

ESET Virus Radar

Global Knowledge

Heimdal Security

HYPR

KnowBe4

Malwarebytes

OPTIV

Quick Heal Blog

SANS Institute

Sophos:

1. https://www.sophos.com/en-us/medialibrary/PDFs/other/sophosthreatsaurusaz.pdf?la=en
2. https://home.sophos.com/en-us/security-news.aspx

Cybercrime Magazine – links to various CS dictionaries and other related pages