BullGuard vs Cylance

Founded in 2002 and headquartered in the United Kingdom, BullGuard developed a reputation as a reliable antivirus provider with a focus on home users, families, and gamers. Their services stood out for blending strong, multi-layered threat detection with performance optimization features—most notably their Game Booster, which allowed users to enjoy lag-free gaming while staying protected. BullGuard’s security suite included essential tools like real-time protection, a configurable firewall, encrypted cloud backup, and a secure browser for financial transactions. Their interface was praised for being user-friendly, especially for non-technical users, and they performed consistently well in independent lab tests from AV-Test and AV-Comparatives. While macOS and mobile support was limited compared to Windows, BullGuard maintained a loyal customer base thanks to their practical features and straightforward approach to cybersecurity. In addition to strong malware defenses, they offered useful extras such as a vulnerability scanner, customizable parental controls, and system optimization tools, making them a well-rounded option. In 2021, they were acquired by NortonLifeLock, and by mid-2022, all BullGuard products and services were fully migrated to Norton’s ecosystem, ending standalone BullGuard offerings.

Cylance was founded in 2012 in Irvine, California, focusing on using artificial intelligence to prevent cybersecurity threats proactively. While their early success was rooted in enterprise solutions, they expanded into the consumer space in 2018 with Cylance Smart Antivirus—a lightweight, AI-based security tool designed to stop threats before they could run. Their antivirus software didn’t rely on traditional signature updates or scheduled scans. Instead, it analyzed behavior in real time and blocked suspicious files. Users could manage multiple devices through a centralized, cloud-based dashboard. They positioned their service as a minimal-intervention alternative for individuals and families seeking quiet, background protection. However, third-party testing was limited. The one major AV-Test evaluation in 2020 gave them strong performance marks but below-average protection results. They also lacked standard features found in broader security suites, such as VPNs or password managers. BlackBerry acquired Cylance Smart Antivirus in 2019 and gradually phased out their home antivirus. Arctic Wolf's acquisition of the company's enterprise solution led to their complete discontinuation by 2024. What did they bring to the table—and what can today’s users learn from their short-lived approach to home cybersecurity?