How to log in to Zscaler- Zscaler a tool that GCS use's to ensure that the content that our students use is appropriate. If you are using a device at home you may be prompted to log in once a day to be able to access some of the course content on Canvas. To log in, you will use the student id number 00000000000@stu.gcsnc.com and the students birthday MMDDYYYY.