Is cloud computing secure computing?

摘要

Widely embraced by consumers and businesses alike, the emerging computing option known as cloud delivers everything from music and photos through a public cloud to business email and data storage through a private, corporate cloud. Now cloud is poised to create new business modeis across industries and move into areas that matter at a societal level, such as finance and national defence. But as with all new models, there are obstacles. Cloud resources -whether on a public cloud on the Internet or a private cloud behind a corporate firewall - face the same risks as other shared resources. Uncertainty about cloud security is evident in a Global Risk Survey by IBM's Institute for Business Value, with 77% of respondents believing cloud made protecting privacy more difficult and 50% expressing worries about data breach or loss1. In a further IBM survey, 66% cite security as their top concern when considering cloud2. The good news is that enterprises and governments around the world are addressing cloud's privacy, authentication and security issues, and turning the promise of cloud computing into reality.