WASHINGTON – A cyberattack on the Canvas learning management system left thousands of schools and universities offline Thursday, disrupting access to grades, assignments, course materials and lecture videos as students prepared for finals.

The hacking group ShinyHunters claimed responsibility for the breach, according to the Associated Press. Instructure, the company behind Canvas, did not immediately respond to questions about whether the system was taken down as a precaution or knocked offline, the AP reported.

READ MORE: Canvas outage impacts thousands of schools, universities: Hacker group reportedly takes credit

The hacking group posted online that nearly 9,000 schools worldwide were affected, with billions of private messages and other records accessed. Many school systems and universities in the Washington, D.C. region rely on Canvas as their primary learning management system.

In Montgomery County, school officials said access to the platform will remain unavailable “out of an abundance of caution” while they work to understand the impact of the incident and any potential vulnerabilities. Families were urged not to log in until MCPS and the myMCPS Classroom vendor resolve the issue.

The University of Maryland said it does not yet know when Canvas will return to service.

Canvas Cyberattack DC-Area School Systems Affected

Montgomery County Public Schools

Canvas (myMCPS Classroom) owned by Instructure Inc., is used by the school district as its learning management system. Due to a reported global cybersecurity concern involving Canvas, and impacting numerous school systems, universities, corporations in Maryland, other states, and worldwide, thus access to myMCPS Classroom has been disabled.

Out of an abundance of caution, access to the system will remain unavailable while we work to better understand the full impact of the incident and any potential vulnerabilities involving information connected to the platform. Please do not attempt to log in to the platform until MCPS and the myMCPS Classroom (Canvas) vendor have resolved this problem.

At this time, appropriate MCPS technology and security staff are continuing to assess the situation and coordinate with the vendor. We understand this disruption is frustrating and appreciate your patience as this work continues.

myMCPS Classroom provides access to student information such as grades, assignments, attendance, and course materials, and is an important tool for students and families to monitor academic progress. Additional information on how students can access resources and functions in myMCPS Classroom will be provided as soon as possible.

Updates will be shared as soon as additional information becomes available.

University of Maryland

Canvas may appear to be up right now, but please to not use it. DIT Security is not confident the system is safe to use right now. Please check back here before using Canvas.

For our faculty who use Canvas, we have created this guidance, and we will continue adding resources tomorrow. Please stay in touch with your students as we adapt to this evolving situation.

Prince George’s County Schools

There has been a cybersecurity incident involving Canvas, our Learning Management System.

Instructure, the parent company of Canvas, notified us of a global cybersecurity incident affecting 275 million users across numerous educational institutions. We have been informed that PGCPS was one of the many impacted organizations. While personal information including names, emails and Student IDs was impacted, NO sensitive  information, such as dates of birth, passwords, financial information, was involved. PGCPS does not store that type of sensitive information or parent information in Canvas.

We are using this as an opportunity to reinforce the importance of exercising caution when communicating by email and remaining vigilant regarding suspicious messages, spam, phishing attempts, or other potentially fraudulent communications. 

We will continue to monitor the situation and remain in close communication with Instructure.

Anne Arundel County Public Schools

Due to the ongoing issues with the Canvas Learning Management System (LMS), AACPS will operate schools on Friday, May 8, 2026, without the use of the LMS. The Virtual Academy will also remain open with altered instructional delivery that will also not use the LMS. Further instructions will be communicated from the school principal. The latest information regarding the breach and the status of school district operations can be found at www.aacps.org/canvasbreach.

Prince William County Public Schools

We are aware of the error appearing when accessing Canvas and are actively working with the vendor to resolve it. The issue is not just impacting PWCS, and is widespread and national in scope. We will provide updates when the vendor has resolved the issue.