Chaos erupts as cyberattack disrupts learning platform Canvas amid finals Across the country, schools and colleges postpone year-end tests. https://arstechnica.com/security/2026/05/chaos-erupts-as-cyberattack-disrupts-learning-platform-canvas-amid-finals/?utm_brand=arstechnica&utm_social-type=owned&utm_source=mastodon&utm_medium=social