first step and most important... no porn sites.
and do not click any links, anywhere, unless you are sure the site is 100% legit.
Get WOT web of trust, thats very useful and good indicator showing bad websites in search results.
Get anti virus, eset is very good.
NEVER open / click any links in emails.
UNDERSTAND most virus/keyloggers and such, often need you to click a link.
Doing the above should be enough to keep you safe.
Yes, I recommend you guys buy a small 11 inch notebook for only staking purpose, don't surf internet there, store the wallet in that notebook.
Use general computer for daily browsing, but don't use our Stratis stake computer to surf internet, to keep that 100% secure and clean.
Also, It would be a good idea to store whats on your notebook to a usb/micro sd card for backup.
Good idea, and that 11 inch notebook can be used for other reliable coin staking, don't install unreliable new coin wallet, to avoid a backdoor or trajan horse. 11 inch notebook only costs 1-200 usd, rather cheap compare my Stratis stake(more than 50k usd).
Stay away from public wifi (coffee shops, libraries, schools) when accessing your wallet.
Rock Solid information here. It should be part of the "staking" "Q&A" sheet for sure.
To sum up, for super safety, people should buy a cheap notebook and this way you can stake your coins 24/7.