| Email spoofing is the creation of email messages with a forged sender address. It is easy to do because the core protocols do not have any mechanism for authentication. It can be accomplished from within a LAN or from an external environment using Trojan horses. |
| The Social-Engineer Toolkit (SET) was created and written by the founder of TrustedSec. SET is the standard for social-engineering penetration tests and supported heavily within the security community. |