Microsoft Defender Arrives on Linux: The Windows Antivirus Has Changed Platforms

⚡ The gist in 5 seconds - Microsoft has released Microsoft Defender — an antivirus for the Linux operating system. - The product was historically known as Windows Defender, and it is now available outside of Windows as well. - Release details — the list of supported distributions, package versions, and installation method — were not disclosed in the original announcement. ### 🔍 What was found Microsoft has released the Microsoft Defender antivirus for Linux. This was reported by iXBT, citing a publication dated October 17, 2026. The irony of the situation is that this software was originally called Windows Defender and was tied exclusively to the Microsoft platform — now the same product is officially available on an open-source OS. The source provides no other technical details: neither the supported distributions, nor the delivery format, nor the version or build number are specified. How it works — real-time file system scanning, kernel integration, or manual scan mode — is also not described in the report. All that is known at this point: the Linux release has happened, and it is an official move by Microsoft, not a leak or a beta build. ### 💡 Why it matters Linux has traditionally been the domain of open-source antivirus solutions and built-in distribution security mechanisms, while the enterprise segment has long lived on a tight integration with Windows infrastructure. The arrival of Defender for Linux makes life easier for admins of mixed fleets: one vendor and one console for both platforms instead of a zoo of agents. Without data on supported distributions and the installation method, it is too early to assess the practical benefits — we await official documentation from Microsoft.