I've never ordered from EightVape, but I sympathize with you guys. It's a hassle to get hacked.
A couple of years ago I shopped at Walmart and paid with my Visa card. When I got home I received a text message from Bank of America followed by a phone call to tell me that they had detected fraud on my BOA Visa card. Someone had charged a tank of gas for $35 in Atlanta (I'm in Macon) while I was on the way home from Walmart. They also made three $500 purchases online from Macy's. Once I denied making the charges BOA credited my card with all the fraud purchases, instructed me to cut up my card, and sent me a replacement card with a new number overnight by Fed Ex. I was impressed.
These days people can sit across the street and hack a wireless connection to a server. If Encryption isn't strong enough they can capture transaction data. I suppose the hackers that got my info were part of a theft ring in Atlanta since one of them filled up at a pump there using my CC number. They had to have had hardware in their vehicle that could create and program a hacked card to swipe at the gas pump. They obviously sent the data to a crony in Atlanta as soon as they hacked it.
Times are changing and electronic fraud has become very professional.