Simplae ways to secure your blog from hackers

The fear of most blogger now is about them loosing their sweat and sleepless night they have put 
in -place in other to build a successful blog .This is not only happening to complained and government official page but also to individual who control a blog .How do you feel when you woke 
up on a blissful morning to check your blog stats or check maybe you have make some cash.but you access to your account is denied or found all your blog scattered,or found injected links in your footer and you are worried about what is really happening the answer is so simple . You are Hacked !
Hacked ! yea you got that right

So you can secure my blog from hackers or spammers?