Canvas does not have a single built-in “cheating detector,” but it uses a combination of quiz activity logs, plagiarism-checking integrations, and optional proctoring software to flag suspicious behavior during exams and assignments. What your instructor can actually see depends heavily on which tools your school has enabled.
Quiz Logs Track When You Leave the Page
The most common monitoring feature built directly into Canvas is the quiz log. Every time you take a quiz, Canvas records timestamped entries for specific actions: when you viewed a question, when you answered it, when you navigated away from the quiz page, and when you came back. The key flag instructors look for is “stopped viewing the Canvas quiz-taking page,” which triggers any time you close the browser tab, open a new tab, or switch to a different program on your computer.
Your instructor can pull up this log for any student by opening the quiz results and clicking “View Log.” They’ll see a timeline showing exactly when each navigation event happened and how long you were away. If you left the quiz page for two minutes right before answering a difficult question, that pattern is visible.
There are important limits to what the log captures. Canvas records that you left the quiz page, but it cannot see where you went. It doesn’t know if you opened Google, texted a friend, or simply minimized the window to check the time. It also cannot track activity on a second device. If you look up answers on your phone while keeping the quiz tab open on your laptop, the quiz log won’t register anything unusual.
Canvas itself acknowledges these logs aren’t perfectly reliable. Instructure’s own terms suggest quiz logs shouldn’t be used as sole evidence of academic misconduct, and educators have reported occasional data gaps and unexplained anomalies, even when students were clearly active. So while a quiz log full of “stopped viewing” entries looks suspicious, it’s not definitive proof of cheating on its own.
Lockdown Browsers Restrict Your Computer
Many schools pair Canvas with Respondus LockDown Browser, a separate application that locks your computer into the exam. Once you launch a quiz through LockDown Browser, the assessment displays full screen and cannot be minimized. You lose access to other applications, including messaging apps, screen-sharing tools, virtual machines, and remote desktops. Printing, screen capture, copy-paste, right-click menus, keyboard shortcuts, and task switching are all disabled. You cannot exit the browser until you submit the quiz for grading.
LockDown Browser also blocks more advanced workarounds like browser cache exploits, launching applications with timers, and screen recording software. If a quiz requires LockDown Browser, you simply cannot open it in Chrome, Firefox, or any other standard browser.
Some schools add Respondus Monitor on top of LockDown Browser, which uses your webcam and microphone to record you during the exam. The recording is flagged for the instructor if the software detects things like a missing face, multiple faces, or unusual head and eye movements. Other proctoring tools like Proctorio offer similar webcam monitoring and can be integrated directly into Canvas. These tools vary by institution, so whether your school uses them depends on what licenses they’ve purchased.
Plagiarism and AI Writing Detection
For written assignments, Canvas integrates with Turnitin, which checks your submission against a massive database of academic papers, websites, and previously submitted student work. Turnitin generates a similarity score showing what percentage of your text matches existing sources, with matched passages highlighted so the instructor can see exactly what overlaps and where it came from.
Turnitin also produces a separate AI writing report designed to identify text generated by large language models like ChatGPT. This score is independent of the plagiarism similarity score. The report breaks flagged text into categories: text likely generated directly by an AI, and text that appears to have been AI-generated and then run through a paraphrasing tool like Quillbot. Each category is color-coded in the report so the instructor can see which sections triggered the detection.
The AI detection has specific requirements and limitations. Your submission needs at least 300 words of prose in a long-form writing format. It currently supports English, Spanish, and Japanese. The model doesn’t reliably catch AI-generated content in poetry, scripts, code, bullet points, tables, or annotated bibliographies. To reduce false positives, Turnitin suppresses AI detection scores that fall between 0% and 20%, displaying an asterisk instead of a number. So a lightly AI-assisted paper might not generate a reportable score at all.
What Canvas Cannot Do Without Extra Tools
Without proctoring software installed, Canvas on its own is fairly limited. It cannot see your screen, record your webcam, track your keystrokes, or monitor what other tabs or applications you have open. The quiz log detects that you left the page, but not what you did while you were gone. It has no way to detect a second device sitting next to your laptop.
Canvas also cannot tell the difference between a student who navigated away to cheat and one whose internet briefly dropped, whose computer sent a notification, or whose browser auto-refreshed. That’s why many instructors treat quiz log flags as a starting point for a conversation rather than as conclusive evidence.
How Instructors Piece It Together
In practice, most instructors don’t rely on a single tool. They combine quiz log data with other signals: how long you spent on each question, whether your answer patterns match another student’s, whether your writing style suddenly changed between assignments, and whether your Turnitin report shows unusual similarity or AI indicators. Some instructors also use Canvas settings strategically, like randomizing question order, pulling from question banks so each student gets different questions, setting strict time limits, and showing one question at a time to make collaboration harder.
The level of monitoring you’ll encounter depends entirely on your institution and your instructor. A low-stakes weekly quiz might have no proctoring at all, while a high-stakes midterm could require LockDown Browser with webcam recording. If you’re unsure what’s being tracked, check the quiz instructions or your course syllabus, which typically disclose required proctoring tools.