How can I tell if software solutions to my labs are posted online? I just had a student inform me that software solutions to my labs (I teach a course in microcontrollers using the ATmega328P) is available on Chegg. She was uncomfortable giving me any further details. She's a very trustworthy student and I don't have any reason to doubt the veracity of the information that she gave me.

I did a lot of searching and was unable to find anything relating to my labs. I searched for my class number, my last name, the name of the course, the name of the college, and didn't find anything. I even tried searching for strings of text that contain the problem statement for a couple (but not all) of the lab questions.

How can I confirm this?
You can't tell if solutions to your problem sets are posted online. The internet is HUGE and some things are hidden behind paywalls or other login forms.

But what you can do is:


design your own exercises and modify them enough each year to make it harder to re-use solutions.
quiz students about their solutions to (easily) find out if they did it themselves or at least understand the code.
wish your students good luck with their exams, where they will not have internet access.