Breaking the Rules, Stretching the Rules 2017 (BTR 2017) reports on company violations observed from 2014 to 2017. The Rules are the International Code of Marketing of Breastmilk Substitutes and subsequent WHA resolutions (the Code). IBFAN groups and individuals submitted these reports to ICDC using its online monitoring form or its monitoring smartphone app (www.ibfan-icdc.org/report). Entries not sufficiently substantiated by evidence were rejected. BTR 2017 uses a qualitative monitoring approach and allows for naming companies. Our report reveals only the tip of the iceberg. A total of 792 Code violations from 79 countries and by 28 companies are reported in this 11th edition of the BTR.