There are many other sites coming up with the same problem, its not just about vaccine issues. My website shows "This site has been reported as unsafe" page. - Microsoft Q&A windows-10-security - Microsoft Q&A BUT…This is not the issue with this particular part of the site. It’s the PDF inline viewer which is causing the phishing alert, not the content. Just click on the "Unsafe Content" button and it gives you the details. Not all parts of the site give this error, just the PDF inline viewer by PDFjs.