In previous posts, we explained how QR codes work and the advantages they offer within new verification systems. One of the points to consider regarding this tool is the cybercrimes to which users may be exposed. Falling for mobile scams like smishing or phishing is now as easy as clicking on a link. Cybercrime is already a problem in Industry 4.0, raising concerns and making digital security a necessity. Some of the data that may be compromised and must be protected is confidential, such as personal information, software, purchases, online banking, government computer systems, and even biometric information, such as fingerprints, facial scans, retina scans, iris scans, etc. Cybersecurity companies recommend not trusting QR codes 100% of the time. This is to avoid scanning altered QR codes that don\'t redirect to the intended site and being sent to a fraudulent website. It also helps prevent the theft of personal data associated with accounts and/or web applications. Furthermore, it\'s recommended not to scan codes whose destination is unknown or that offer large prizes simply for scanning. The global COVID-19 pandemic has also accelerated the use of QR codes. As a result, this type of cybercrime is on the rise. A 125% increase in this type of crime has been recorded, making it one of the most common after theft.