Think Before Scanning Miscellaneous QR Codes
QR codes—those blocky squares you scan with your iPhone camera—are an easy way to open a Web page. Unfortunately, scammers also use them to trick people into visiting malicious websites, so read our tip about scanning these codes safely.
Prevent Spoofing from Domains that Don’t Send Emails
If you have parked domains that never send email, it’s important to set up SPF, DKIM, and DMARC so scammers can’t forge legitimate-looking email from those domains.