Computers Wi-fi networks Most Wi-fi links -- transmitting e-commerce, banking, crucial data -- are unsecured, can be easily hacked. Have been misused by terrorists to send emailsBanks/companies Banks use secure authentication process to ensure security of customer data. Companies/shops depend on secure payment gateways of banks to protect customersMobile phones M-banking, commerce and Internet putting user data in one device. In case of handset loss, crucial data can be available to anyoneHackers Can identify users through IP address, they can access personal data and bank accounts. Unsecured Wi-fi links easiest to misuseATM Credit/debit card data on magnetic strip can be copied from ATMs and misused