FYI, I had some fraudulent attempts on my card after I used it with SegPay. First they tried to take about 45$ but failed, after a while about 15$ and failed, the third time 2-3$.
I blocked the card and created a new one. A few months later, when I paid with SegPay again, I saw the same behavior.
I'm not sure if the card data was leaked by SegPay, but it happened twice, both times after I used the card on SegPay. Never happened before, never happened after.