What Is Phishing?
Phishing is a social engineering technique in which an attacker tricks you into revealing private information. Phishing attacks typically begin with an email pretending to be from someone you know or trust, such as a friend or company. From there, the attacker may ask you to click on a malicious link or open an attachment containing malware.
In most cases, opening, reading, and deleting a phishing email is safe. For most attacks, you have to do something after reading the email, like opening an attachment or clicking on a link.