Natasha receives an email with an attachment from an unknown sender$.$ The email claims to contain an important document. What safety measure should Natasha take before opening the attachment?

Natasha receives an email with an attachment from an unknown sender$.$ The email claims to contain an important document. What safety measure should Natasha take before opening the attachment?

Forward the email to colleagues for their opinion before opening it$.$

Disable her computer's firewall for smoother file opening.

Open the attachment without any hesitation.