Why is it necessary to keep one\'s privacy in this technology-driven world?

I think privacy should be kept no matter whether it is a technology-driven world or not. However, nowadays, more and more people communicate with others and put their pictures and personal information in store on the web. So, if hackers or IT experts want to steal personal information or invade privacy, it is not hard for them to do it. On top of that, more people use other\'s pictures, or information senseless while doing SNS activities, and unexpected privacy invasion can occur in the process, which sometimes leads the invaders liable for what they\'ve done. The more interaction we\'re involved in SNS, the more susceptible and vulnerable to privacy violations we can get. That\'s why we need to be more careful not to invade privacy. On the other hand, we need to learn how to deal with these legal arguments by taking classes about privacy violations for protecting us. The everlasting truth that good and bad things always coexist in all technologies, systems, and rules also applies here.