The once-novel QR codes are now a common technology. Whether you scan them to download an app, claim a discount, pay for parking, access a menu, or register for an event, they\u2019re fast and easy.<\/p>\n\n\n\n
And that’s exactly why attackers started paying attention to them.<\/p>\n\n\n\n
Security researchers observe a growing number of phishing campaigns built around QR codes over the past few years. A tactic often referred to as quishing<\/em>, where, instead of sending users directly to a suspicious website, attackers hide the destination behind code and rely on the scan.<\/p>\n\n\n\n The technique isn’t particularly sophisticated, as QR codes often feel trustworthy by default. An interesting challenge: when a malicious QR code appears in an ad, promotion, or landing page, with consequences that can extend far beyond a single click.<\/p>\n\n\n\n So how exactly does quishing work, and why is it becoming a growing concern across the advertising ecosystem?<\/p>\n\n\nContents<\/h4>