Yes of course, payments are secure at Blidz. Your credit card details are actually never even sent to or stored by Blidz. All our partners have very advanced encryption techniques. When you enter your card details, they are processed by BlueSnap - a certified PCI Service Provider Level 1. This is the most advanced security level available in the payments industry.
If you want to know more about Security at BlueSnap, please head to https://home.bluesnap.com/legal/pci-dss-compliance/