CFDs are a leverage product and can involve a significant risk of loss. Trading CFDs may not be suitable for all, therefore you should ensure that you understand the risks involved and take into account your individual circumstances.
Trader's Glossary

What is Front Running?

Front running is an illegal practice of brokers acting in their own interests with foreknowledge of events that are likely to affect the market. For instance, a broker who purchases a security with apersonal account just before executing a large order on behalf of a client is regarded as front running because the smaller order is very likely to benefit from a rise in price caused by the execution of the second larger order.