The usernames, passwords and other authentication information you provide to us are passed, in encrypted format, directly through to Yodlee - 22Seven’s information aggregation partner. Tweak or 22Seven never stores them. Yodlee stores them in encrypted format and only the system that actually collects your information is able to decrypt them when required to do so. At no time can Tweak, 22seven or Yodlee staff access your credentials. Yodlee’s security overview provides more information on their security here.