1. Bocjj, P.: The Dark Side of the Internet: Protecting Yourself and Your Family from Online Criminals, 2nd edn, pp. 159–161. Greenwood Publishing Group, Westport, CT (2006)
2. Morley, D.: Understanding Computers in a Changing Society, 3rd edn, pp. 196–199. Course Technology Cengage Learning, Boston, MA (2008)
3. Buxton P.: Egg rails at password security, Netimperative, June, 24, (2002)
4. Zombie PCs for Rent Information Security&p%5Bne%wsletterId%5D=609, September 2004
5. Dorrans, B.: ASP.NET Security, Wiley (John Wiley & Sons, Ltd), ISBN:978-0-470-74365-2, 2010