penetration testing

Source: http://www.google.com/url?sa=i&rct=j&q=&esrc=s&source=images&cd=&cad=rja&uact=8&ved=0CAUQjhw&url=http%3A%2F%2Fwww.ittrainingsolutions.net%2Fservices%2Fhacking-penetration-testing-and-defensive-countermeasures&ei=AuW_VMjNPI2IgwSWyYDgDA&bvm=bv.84116906,d.eXY&psig=AFQjCNElGT4wJizSuxHgyoWCaqH3IficIQ&ust=1421948529267253