You may want to read: http://aws.amazon.com/s3/faqs/#How_secure_is_my_data http://aws.amazon.com/s3/faqs/#How_secure_is_my_data The easiest method for security

You may want to read: http://aws.amazon.com/s3/faqs/#How_secure_is_my_data http://aws.amazon.com/s3/faqs/#How_secure_is_my_data The easiest method for security via S3 would be the query string method, which lives for a defined period of time.