I don’t have an explanation for why it is called this, because really the name of it is in its definition. The two words this sentence describes are cybercrime and computer crime. They are both the same thing.
Apply a theme to your presentation
Open your presentation.
On the Design tab, you'll find design themes in the Themes group.
To preview how the current slide would look with a particular theme applied, rest your pointer over the thumbnail image of that theme.
To view more themes, on the Design tab, in the Themes group, click More More button at the right end of the gallery.
To select and apply a theme, click the thumbnail image of that theme.
Unless you specify otherwise, PowerPoint applies the theme you select to the entire presentation.
To apply a theme to only one or a few slides, select the slide or slides, right-click the theme you want, and select Apply to Selected Slides.
It really would depend on what E-Mail system you're using.
If say, you're using G-Mail, the Recipient's address would be placed simply in the "To" bar right above the "Subject" bar.
You should avoid those types of writing because it doesn't make you look like you are a professional.
hope this helps!
The Pirates of Silicon Valley.
Tron
Hackers
Antitrust
The Social Network
The Internship
The Imitation Game