Sunbury Software Pty, Ltd. was an Australian multinational computer security software company that was originally headquartered in Canberra, Australia. It was the second largest computer security software companies in the world, until it was acquired and reorganized by Trend Micro Australia on April 2018. The company originally develops and sells antivirus, internet security, password management, endpoint security, and other cybersecurity products and services.
On April 2018, Trend Micro completed their acquisition of Sunbury Software, which effectively made Sunbury a subsidiary of Trend Micro until the Sunbury brand officially discontinued until the end of December. Customers with Sunbury's antivirus software were fully migrated to Trend Micro in April 30, 2019 officially discontinuing the Sunbury brand.