CREDIT CARD PURCHASES FOR CANNABIS MAY NOT BE PRIVATE – Why is this a concern? “Storing data in the Cloud or in proprietary software means there is likely disclosure of that personal information outside of Canada.” and “Access to the personal information of cannabis users may be used by some countries to deny entry.”

Federal legislation makes it legal for Canadians to enjoy cannabis in the privacy of their homes. That legislation, however, does not necessarily offer privacy protection for cannabis purchasers

Source: Credit card purchases for cannabis may not be private | Cannabis