To Protect Your Desktop Swiscoin-qt wallet you can encrypt your wallet by passphrase to do this.
1). Go To Setting Menu and Choose “encrypt wallet”.
2). Then Type New passphrase and then click on OK.
Now Your Desktop Wallet is secure with passphrase.
Continue Read other swiswallet Article:-
=> Getting Start with swiscoin wallet
=> Things should be take care while using Swiscoin wallet
=> Taking Backup of swiscoin Wallet