Shopify's security is good. But any security is only as strong as your password, and the security of the machine on which you log onto the website. Read More
Consider this scenario (you may need a coffee first).
You may be seeing a blank order printer screen when you go in to the app. The good news is that it isn't broken, your browser just needs more permissions.
Sites using third party shipping apps like ShipIt and Fastway/AP Shipping may be experiencing problems with no shipping rates being loaded at checkout.
If your shipping rates are set up through admin/shipping you are not affected.