What are SIS’s support hours? Our regular support hours are Monday-Friday, 9:00 am ET to 6:00 pm ET. Related Sis Blogs Education How to Improve School District Security Across Multiple Campuses Federal Government How Government Security Teams Handle High Alert Volume Without Losing the Thread Public A Practical Approach to Managing Multi-Site Security Operations Across Complex Public Sector Environments Related Blogs Explore All SIS Blogs Education How to Improve School District Security Across Multiple Campuses Federal Government How Government Security Teams Handle High Alert Volume Without Losing the Thread Public A Practical Approach to Managing Multi-Site Security Operations Across Complex Public Sector Environments