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.

Verify the sender's identity and confirm the legitimacy of the email and attachment before opening it.