Candidates have more tools to misrepresent their work than ever — from copy-paste shortcuts to hidden AI apps that run silently in the background. Codility gives your team three controls to surface the signals that matter.
Proctoring
Candidates behave differently when they know they're being watched. Proctoring adds a behavioral monitoring layer to Screen assessments so you can see exactly what happened during the test.
What it tracks:
- Copy-paste activity into the IDE (with the pasted code logged in the Timeline)
- Tab switches away from the Codility browser tab
- Unusually fast task completion relative to expected time
- Attempts to copy the task description (a common signal of AI tool use)
- Webcam snapshots at regular intervals and on flagged events (kept 30 days)
- Optional: continuous screen recording and video/audio recording
How to turn it on: Open your Screen test settings and enable Proctoring under the Assessment and Hiring Policies section. You can enable all signals or select specific ones. Proctoring must be enabled before the first candidate invite — existing tests need to be duplicated first. To enforce it across all tests at the account level, use CodeCheck Governance Settings.
Signals appear in the Assessment Integrity widget and Timeline tab of the candidate report. Not every signal is evidence of wrongdoing — use them to decide whether a Codility Interview follow-up is warranted.
Full article: Proctoring and Behavioral Events Detection →
AI Follow-Up Questions
A submitted solution only tells you what a candidate produced — not whether they understand it. Follow-Up Questions close that gap automatically.
What it does: After a candidate submits their take-home solution, Codility's AI analyzes their code and generates three targeted questions unique to that submission. Each question is time-boxed to 2 minutes, with copy-paste prevention and keystroke monitoring active during answers. The full transcript — questions, answers, and time taken — appears alongside the solution in the candidate report.
How to turn it on: Configurable at the test level in Screen test settings. Currently supports single-file fundamental tasks.
Full article: Follow-Up Questions for Take-Home Assessments →
Device Integrity (Preview)
A growing category of AI tools runs as hidden desktop applications that feed candidates answers in real time — and they're built to be invisible to screen sharing. Proctoring can't catch what it can't see.
What it does: When Device Integrity is enabled, candidates complete the assessment or interview inside the Codility App, a lightweight desktop application for macOS and Windows. The experience is identical to the browser version, but the app can detect cheating tools running on the device and surface them in the candidate's integrity report alongside existing signals like copy-paste and tab activity.
How to turn it on: Enable per Screen assessment in test settings, set it as a default in Screen Settings, or turn it on per Interview session.
Full article: Device Integrity →
These three features give your team more signal — the decision on what to do with it is still yours. When results raise questions, follow up with a Codility Interview to review the work directly with the candidate.
Any questions or need further help? Reach out to support@codility.com