PayPal automatically encrypts your confidential information in transit from your computer to ours using the Secure Sockets Layer protocol (SSL) with an encryption key length of 128-bits (the highest level commercially available). Before you even register or log in to the PayPal site, our server checks that you're using an approved browser - one that uses SSL 3.0 or higher.
Once your information reaches the PayPal site, it resides on a server that is heavily guarded both physically and electronically. PayPal servers sit behind an electronic firewall and are not directly connected to the internet, so your private information is available only to authorized computers.
What Makes the PayPal Site So Secure?
Our state-of-the-art fraud models and proprietary fraud engine work together to help stop fraudulent transactions before they happen. In addition, PayPal stays at the forefront of security, developing many anti-fraud technologies every year.
With PayPal, you've got the industry's most experienced fraud team on your side. PayPal processes billions of dollars in payments each year, allowing us to continually perfect our anti-fraud protections. As a result, PayPal's loss rate is significantly lower than the industry average. We also work with federal law enforcement to catch criminals.
PayPal is committed to protecting the privacy of our users. When you send or request money using PayPal, recipients never see your bank account numbers or credit card numbers. They only see your email address, date of sign-up, and whether or not you have completed PayPal's Verification process.
128 bit SSL Certificates are designed for encrypting web sites for low volume online transactions. Trusted by over 99.9% of current Internet users, Positive SSL is the solution for new websites or environments where trust has been established and entity verification (for identity assurance) is not needed.