Sending e-mail is like sending a postcard to someone. The mail carrier who picks up the postcard, the person who sorts the mail, the person who delivers the mail and anyone who sees the postcard lying around can read the contents. e-mail is not a secure method of communication. Most of us have no idea how to read an e-mail being sent to someone but, there are a lot of tech savvy people who do and it isn't all that difficult. Someone wanting to steal your identity can simply wait for your e-mail to pass by.
That means you shouldn't send confidential information via e-mail. That includes:
- social security numbers
- bank account numbers
- credit card numbers
- any information that you want to keep confidential