QR codes, those square, blocky codes you scan with your iPhone’s camera to load a Web page, have become ubiquitous. So much so that we seldom pause before scanning any QR code we see. But if you think about it, that’s the same as clicking random links in emails or texts, which is a terrible idea from a security perspective. “Quishing” (QR code phishing) isn’t commonplace yet, but some sources say there are thousands of cases per month. To avoid falling victim to a quishing scam, only scan QR codes from trusted sources, try to verify what a code will do once scanned, and evaluate the yellow URL preview Safari provides (when using other browsers, all you see is Open in Browser Name). Finally, always install iOS security updates promptly because they often address vulnerabilities that could be exploited with malicious data.

(Featured image based on an original by iStock.com/B4LLS)