TERM

event

An observable occurrence in an information system or network.

Updated

Jan 06, 2026

Senses

Sense 1

An observable occurrence in an information system or network. Sometimes provides an indication that an incident is occurring or at least raise the suspicion that an incident may be occurring.

An observable occurrence in an information system or network.

Sometimes provides an indication that an incident is occurring or at least raise the suspicion that an incident may be occurring.

NICCS (CISA) Cybersecurity Vocabulary

Bibliography

NICCS (CISA) Cybersecurity Vocabulary
Accessed Jan 06, 2026Quoted
NICCS glossary export (CSV)
https://niccs.cisa.gov/rest/vocab/export-csv
NICCS is a CISA (DHS) program. Individual glossary entries include a "From" attribution (e.g., CNSSI 4009, NIST SPs, NICE Framework). Treat "From" values as upstream provenance and verify before quoting large portions of text.
Source: NICCS (CISA) Cybersecurity Vocabulary (niccs.cisa.gov).