You want to be careful about people coming to your door and claiming to be collecting for the Brain Tumour Foundation of Canada. In Sudbury, police say fraudsters have been collecting cheques on behalf of the foundation and then alter the amounts. Police are urging the public to check their records to ensure you’re not a victim. The con artists went door-to-door in Sudbury last month and could be making their way to other communities so beware. Sudbury police have also confirmed with the brain tumour foundation that it does not solicit money door-to-door.