text: information on internet security, its advantages and disadvantages? the  definition of edi, the differnet types of payments on the internet, digital signatures and digital certificates, firewalls and security in e-ecommerce also the definition of e-commerce. advantages:  if you have a secure internet connection, you are less likely to be hacked, id stolen etc.  disadvantages:  if you are a hacker, you have a more difficult job hacking, or stealing id's.