The history of access to the internet is online trace data that hard to hide. The business recognizes customer behavior when they are using the internet and can bring big data to use. Big data refer collect online activities continuously by use cookies for collecting the trace data from customers. The data type has two kinds following as data that identify the interest of the customer to the business and data that identify as the interest of the customer. The businesses need to collect and protect the data of customers follow the policy of the business and IT law of each country.