Remember EF
Full name: Exposure Factor
Memory aid: Exposure Factor is the fraction exposed to loss.
Express a percentage as a fraction when calculating SLE.
Study area: MIS, risk & continuity · Batch 3
Relevant study for: CompTIA Security+ SY0-701 · ISC2 CISSP 2024 outline · CompTIA SecurityX · ISC2 CC
Practice with exam flashcards →MIS, Risk & Continuity / Knowledge library
EF — Exposure Factor
Estimates the fraction of asset value lost in one event.
Why learn EF — Exposure Factor?
Estimates the fraction of asset value lost in one event.
Where it came from
Express a percentage as a fraction when calculating SLE.
- Memory aid (a learning cue, not the expansion): Exposure Factor is the fraction exposed to loss.
Build your understanding
Work through these exercises in order. Try the task before opening a reference.
- Without looking, expand EF: Exposure Factor.
- Recall this memory aid: Exposure Factor is the fraction exposed to loss.
- Explain the practical use: Estimates the fraction of asset value lost in one event.
- Explain this distinction: Express a percentage as a fraction when calculating SLE.
- Identify EF in a device specification, architecture diagram, or system inventory.
Documentation and sources
- NIST cybersecurity glossary (csrc.nist.gov)