Trading using laptop or computer is just the same as long as you have the internet since the trading platforms are web based and you don't need to install it so it doesn't matter if you're going to trade via a PC or a Laptop.
The only
advantage of using a laptop in trading is that no matter where you are (On a break in your office, on a out of town trip, cafe, etc.) you can use your laptop in order to do trading as long as you have an internet connect but... there are some exchanges that has their own ios and android application wherein you can trade using the applications on your mobile phone.
Do you have a VPN or a personal Hotspot?
I think VPN is an optional if the trading platform or cryptocurrency is illegal to your country but you can always use VPN for personal security.
What Virus Protection do you use? How about... Mac Afee?
Antivirus has no connection when doing trading or when in the trading platform... I think the question that will fit in here is that
"What kind of security you're using when doing trading"The security features the most traders are using are the 2FA or a two-factor authentication, also known as two-step verification or let's say a second password and you needed a authenticator application to use this.
Anything it doesn't matter.