The security of macOS was now up for debate, alongside an evaluation of Microsoft Defender for Mac and what could be its best alternatives. The release took many by surprise, not only for its cross-platform support but also because it made them question if antivirus software for Mac was actually needed. However, in March 2019 Microsoft released their proprietary antivirus software for Mac, named Windows Defender ATP (Advanced Threat Protection).
Meanwhile, Mac users were operating in assumed safety for many years. This in turn caused more media exposure around reported cases, which encouraged the market for Microsoft antivirus software. The urban legend is largely fuelled by sheer numbers - in the early days of computing, there were far more PC than Mac users, which meant PCs were more attractive for hackers. There’s a common myth among Mac users that you don’t need Mac virus protection.
