Purchasing From Overseas Via Internet

[Bbbananas]

I tried yesterday purchasing extra copies of wedding photographs from the photographic studio in Cyprus. I sent an email detailing the copies I wanted and instructions how to pay. The reply was to give my full debit card no & sort code. Which, stupidly, I did.
BT 'blocked' the message from sending as they "detected suspicious activity". Thankfully no money went from my acccount and I changed my password.

The question still remains though - how do I make payment to the offical photography site without compromising security? Or would it be better to make payment by good old airmail with a postal order?

[Bbbananas]

Thank you everyone.
I am awaiting a response from the studio now. They are photos of my daughter's wedding, so worth any slight risk. ;-)