Question

why does care need to be taken when opening mail?

Answer 1

if e-mail has a strange name or if u get email from someone u dont know.then u probably shud nt open it.cud contain a virus.

Answer 2

As beketso mentions above, there is some risk of computer infection. Historically, many viruses have been spread through security holes in email clients, particularly Microsoft Outlook. However, modern email clients typically provide a good number of protections against this.