This will sound really official because we know how important it is. CrowdRise processes donations through Network for Good and WePay. Both payment processors are PCI Level 1 Compliant (that's the best) and both offer industry-leading Secure Sockets Layer (SSL) technology.
Network for Good is a donor advised fund, and a Better Business Bureau Wise Giving Alliance accredited charity who meets all of the BBB standards for charity accountability. They have processed more than $400 million in donations for 50,000 charities through their giving system.
WePay is based in Palo Alto, CA and processes transactions for over 250,000 merchants.