Knowledge hub

Ransomware Prevention

Ransomware prevention is a set of practices and controls that reduce the chance of ransomware succeeding and the damage if it does.

Why it exists

Ransomware can halt operations entirely. No single product prevents it; layered controls and recoverable backups matter most.

How it works

  1. 1Reduce entry points (MFA, patching, email filtering)
  2. 2Limit execution (application control)
  3. 3Limit spread (least privilege, segmentation)
  4. 4Ensure recovery (offline, tested backups)

Real-world example

Following the CISA #StopRansomware Guide, a company keeps offline backups and tests restoring them quarterly.

Common misconceptions

  • “Our backups make us safe.” Untested or connected backups can be encrypted too.

Benefits

  • Reduces both likelihood and impact

Limitations

  • Requires multiple controls working together

How it differs from related technologies

Ransomware prevention is a goal; application control, EDR, and privilege management are tools that contribute to it.

Questions a buyer should ask

  1. Which stage of a ransomware attack does this product address?
  2. Are rollback or recovery features included?

Learning path

beginner

  • • Read the CISA #StopRansomware Guide checklist

intermediate

  • • Map your controls to each attack stage

advanced

  • • Run a tabletop exercise

Authoritative sources