6. Legit companies don’t send unsolicited attachments
Unsolicited emails that contain attachments reek of hackers. Typically, authentic institutions don’t randomly send you emails with attachments, but instead direct you to download documents or files on their own website.
Like the tips above, this method isn’t foolproof. Sometimes companies that already have your email will send you information, such as a white paper, that may require a download. In that case, be on the lookout for high-risk attachment file types include .exe, .scr, and .zip. (When in doubt, contact the company directly using contact information obtained from their actual website.)

In the next article: Email Phishing Example 7
