Catrin, they are still doing security updates for Windows 7, per the following:
Mainstream support for Windows 7 ended on January 13, 2015. This means that no new Service Packs are coming for Windows 7, and no new features will be added to the operating system. It does not, however, mean that Microsoft is no longer patching the operating system.
Extended support is still ongoing until January 14, 2020. That’s the date Microsoft will stop issuing new security updates for Windows 7.
This means it’s safe to keep using Windows 7 until 2020, so long as you install all updates.
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