Examinator 🧐

Published:

Examinator is a secret tool that I built to detect cheating in online exams and homework at scale for large courses with 1000+ students 😉. I built it by reverse engineering Canvas New Quizzes network traffic to scrape students responses as well as activity timestamps.

  • During Fall 2023, we caught 3.5% (35 out of 1000) students.
  • During Spring 2023, we caught 5% (~70 out of 1300) students.
  • During Fall 2022, we caught 13% (11 out of 82) students cheating in the midterm and final exam of an in-person undergraduate CS course.
  • During 2021, we caught 20 students cheating in the midterm and final exam of a graduate CS course.

We have a paper published Examinator v3.0: Cheating Detection in Online Take-Home Exams and a patent pending.

Examinator started as a research project at Georgia Tech since 2021, and now it is sold to instructify.ai and become TALIA protect

TALIA Protect™ Use multiple suspicious activity factors such as overlapping time signatures, rare responses, and identical answers to detect collusion in online quizzes without invading your students’ privacy.

We are still actively iterating on the project and expanding

Examinator Activities Timestamp Chart