A: This is a great question. Yes, it is secure. Cheqbook uses two different categorization engines.The yellow transactions are automatically categorized based on community data provided by financial institutions. This is the data you would see when you log in to your bank and is based on vendor categories. Banks can tweak these categories based on their users so we call this crowd sourced. The blue transactions are based on your preferences and our system learns only from you how you prefer to categorize each vendor's transactions.