Don't click links in your email, no matter how real they seem.
When you get an email saying that your bank transfer failed, or account balance is in trouble, resist the temptation to click any links in that email.
Hackers like to send emails saying there's a problem with your bank account, or your email account is full, or a problem with recent package delivery, or even a problem with your mortage application, or house-closing process.
Resist the urge to click any links in the email. Instead, call your bank using the number printed on a credit/debit card. Or log into your bank's website, your email account, or Amazon, etc directly. Type in the website address yourself.
Phishing [fish-ing] verb the fraudulent practice of sending emails purporting to be from reputable companies in order to induce individuals to reveal personal information, such as passwords and credit card numbers.
What's the worst that can happen?
A hacker sends you a fake email convincing you something's wrong with your bank account. By causing a little panic they've gotten you to let your guard down and you click a link that goes to their fake web server instead of the bank's web server.
At that point you think you're logging into your bank's web site, so you type your username and password, and then it shows you a message saying there was an error in the email and your accounts are fine. Meanwhile the hacker, who now has your username and password, can log into the real bank server as you and start emptying your accounts.
Remember, while credit card companies are quick to correct CREDIT CARD fraud, your bank won't do much to help you after your savings accounts are emptied.