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Hi Tom,
Ethical hacking is a career option worth exploring. In recent years, there has been an alarming increase in the number of cyber crime cases on the Internet. Hacking email accounts, stealing and intercepting sensitive data, abusive emails, trojan attacks and espionage are some of the many concerns that have started affecting email users. All these threats have increased the demand for ethical hackers who test security systems and look out for critical vulnerability, for a good purpose.
The demand for ethical hackers is coming mostly from the government agencies. People have woken up to realise the importance of cyber security experts especially after the Mumbai terror attacks in 2008; Chinese cyber attacks on different countries and bomb blasts in different parts of India. Also, organisations including banks, hotels, airlines, telecom companies, IT and IT enabled services companies, outsourcing units, retail chains and Internet firms are seeking ethical hackers to check for vulnerability within their own systems.
All the best

Hi Gunjan,
There are various challenges related to cloud computing data security, listed below are some of them :
1. Multi-tenancy - makes it easier for a hacker to steal the data of all business customers who share the same cloud database.
2. Threats of data loss and data leakage -the threat of data leakage increases when employees use their mobile devices to access and share corporate documents via cloud storage services such as DropBox, Box etc.,
3. Insecure APIs - Most Cloud service providers do not pay attention to the security of their APIs which can pose risks to an enterprise data with regards to privacy and data integrity.
4. Encryption - Most government regulations (HIPAA, PCI) require that data encryption. Although encryption is widely used, it is often implemented poorly. Many companies depend on the cloud provider for encrypting data which means that have control of the key & can access the data anytime.
All the Best

Hi,
It won't affect IT managed services because cloud computing refers to a resource layer while managed service providers offer a management layer on top of the compute or resource layer.
If anything, the increased use of cloud computing will see MSP's see considerable growth due to the fact that many companies that once performed their hosting/compute internally rather than outsourcing either the physical housing of the equipment to a third party data center or to a managed hosting provider for unmanaged or managed dedicated servers will now see the cost benefits of utilising elastic compute resources on an on demand/as needed basis.
Hope this helps