What is the safest file type to open?

Related questions

1. Is Project Gutenberg safe?
2. What are PDF books?
3. Can you read eBooks on your phone?
4. What is BookBub?
5. Can a PDF have a virus Iphone?
6. How long does it take to scan a book?
7. Is Goodreads free?

Tags

1. #considered
2. #several
3. #types
4. #however
5. #period
6. #extensions
7. #letters
8. #classified
9. #three
10. #these
11. #microsoft
12. #dangerous
13. #follow
14. #extension