According to The Payper, citing a study by the Anti-Phishing Working Group, the number of phishing attacks on online stores has increased by almost 5% over the past year. More than 40 thousand new attacks on online retail are recorded worldwide every month. The most vulnerable places of sellers are still payment services and projects that accept payments via electronic currencies. So, if you have been hacked once, you should not count on the fact that "a shell does not hit the same crater twice". Recently, the list of victims includes such systems as the Austrian service PayLife, Chinese Perfect Money and American Payoneer.