Illumio is an American cybersecurity company headquartered in Sunnyvale, California. It specializes in breach containment. The company’s platform is designed to help prevent lateral movement and strengthen cyber resilience across hybrid and multi-cloud environments.

In commentary on a data breach at the retailer Asos, Trevor Dearing, Senior Director of Critical Infrastructure at Illumio, warned that although passwords had not been stolen, individuals should be suspicious of unsolicited messages or calls asking them to change or share passwords. He also noted that scammers may reference the attack, use personal details to appear genuine, and create urgency, such as threatening to lock an account within 24 hours.