To protect your customers and your business from merchant fraud you need to know about the suspected issues that can signalize about credit card fraud. We point out the following fraud signals: merchant application deviations; historical averages deviations; transaction type distribution deviations; enrty mode distribution deviations; typical fraud transactions; duplicate transactions; off-hour transactions; merchant inactivity period; deviations from historical processing pattern frequency. You can find the description of these merchant fraud signals and the information on fraud protection tools here http://paylosophy.com/merchant-fraud-protection-tools/