The best replacement for detection is prevention.

The best alternatives to detection are rated as following:
★★★★★  prevention
★★★★★  intrusion prevention
★★★  error correction
★★  limit of quantification
★★  contrast detection
★★  correction
★★  dog detection
★  phase detection
★  collision avoidance
★  anomaly detection
★  prevention system
★  limit of quantitation
★  intrusion protection
★  contrast
  identification
  false alarm
  face recognition
  checksum

Your alternative for detection is not listed? Suggest!
Speaking about detection, one probably shouldn't forget about nmap.

Other search terms related to detection and their ratings are:
★★★★★ nmap
You have in mind a companion for detection and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of detection in all years. Click on graph for more.
detection
prevention
intrusion prevention