In the digital world, many of us are much more vulnerable than we need to be. Because of that, Intel and McAfee are adding another day to the calendar — Password Day — to encourage everyone to create more secure passwords and take care and protect their online accounts and identity. Check out the top four most common online scams and what steps you can take to avoid them.

1. Scareware—Selling fake antivirus software is one of the most insidious and successful scams of recent years. Cybercrooks play on users’ fear that their computer and information is at-risk by...