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by ocdtrekkie 3059 days ago
That's mostly the old DOC, XLS, etc. which is a binary file format. DOCX, XLSX, etc. are XML-based, I believe?

But yeah, to the parent of yours, Office has a lot of features of embedding and triggering dynamic content, and people are constantly finding creative new ways to infect Office files. Security updates for Office is a critical as security updates for your PC.