All bigger businesses will experience fraud sooner or later. So it's just a matter of time.
I haven't looked by detail into all what you do, but if you only receive bitcoins on behalf of merchants, then the risk of chargeback is non-existant, esp. if you wait for some confirmations.
That being said, I appreciate greatly what you do for the bitcoin community.
On a side note, it's hard to believe what a company says, but I give you the benefit of the doubt since you're using 'bullet proof' technology!
It's also a matter of how you define fraud. If you use multiple exchanges or sources to pay out fiat money, and one of these decide not to pay money, would you consider that fraud ?
Take for instance this:
https://www.payment-network.com/deb_com_en/customerarea/securitySince launching SOFORT Banking / SOFORT Überweisung many million transactions have been securly processed. There has been not one online banking information fraud case. In fact, SOFORT Banking belongs to the safest payment systems on the internet.
This is a complete and outright lie. Something that I've experienced first hand. If anyone would need more extensive information, please pm me.
If you only process bitcoin payments, that's of course a great way to reduce or avoid the fraud. I was thinking of possible scenarios for how fraud could occur.
I am thinking that someone that has control of someones computer could manipulate the infected computer into sending btc payment to a BitPay address, but if that level of access was achived, why not steal the BTC outright ?
Another possible scenario could be that a web site is infected, and it's trying to mimic the BitPay checkout, thus leading the customer to send BTC to an adress belonging to someone else ? Perhaps there could even be an attack in the browser ? Ie, a wrong address is shown.
Then an upset customer would claim he went to the check out process and sent the BTC, but never received the merchandise, how would you solve a case like that ? From your side, all you could see was that the BTC was never received. How can you combat cases like that ?