Nevertheless, it is important to recognize that QR codes can be easily replicated and can redirect users to harmful websites.
For this reason, I remain vigilant when scanning QR codes. Below are the precautions I take to verify the safety of a QR code before scanning it.
Check for Signs of Tampering
The creation of QR codes is a straightforward process. Numerous online platforms are available to assist individuals in generating their own QR codes. However, this accessibility also allows malicious actors to substitute authentic QR codes with counterfeit versions they have produced. Therefore, how can one ascertain whether a QR code has been altered?
It is essential to inspect for any stickers that may be affixed over existing codes or to determine if the QR code appears to have been printed and adhered to a surface. Vigilance is crucial, particularly if the QR code is situated in a location that is easily accessible, such as an unattended parking lot or a crowded restaurant.
Determine the Source
Should you encounter a QR code in a physical setting, such as a restaurant or retail establishment, and have doubts regarding its authenticity, it is advisable to consult the staff for verification. However, QR codes found online present a different set of challenges.
Cybercriminals often impersonate legitimate businesses by creating fraudulent websites or distributing phishing emails that include QR codes. If you find a QR code on the internet, it is prudent to take a moment to scrutinize the source, including the sender's email address or the website in question. Should you notice any discrepancies in branding or if the communication appears unprofessional, riddled with grammatical mistakes or typographical errors, it is best to refrain from engaging further.
Verify the URL
Fraudsters utilizing malicious QR codes depend on individuals neglecting to verify the URL prior to accessing the link linked to the QR code. While it is true that the human eye cannot interpret QR codes, one can still confirm the URL preview displayed on the screen.
Typically, businesses will employ a domain name that corresponds with their brand identity. If the URL appears to be atypical, it is advisable to exercise caution and refrain from clicking the link. Should it be necessary to proceed, consider using an online tool to assess the safety of the link.
Permission Prompts
1. Should you scan a QR code that requests access to your contacts, messages, camera, or location without a valid justification, it is advisable to view this as a significant warning sign. Allowing such permissions may enable malicious individuals to obtain your personal information and jeopardize the security of your device.
Watch Out for Security Warnings
1. On one occasion, I inadvertently scanned a QR code without reviewing the URL preview. Thankfully, my browser notified me that the site was unsafe. It is essential to remain vigilant and heed any warnings that your browser or device may present when scanning a QR code that attempts to redirect you.
In this context, if you do not have automatic updates enabled, I strongly advise activating them or manually updating your operating system, applications, and other relevant software to ensure the security of your smartphone.
Even the most cautious users can occasionally err, which is why it is beneficial to understand the necessary actions to take if you encounter a fraudulent QR code. Steps such as immediately disabling your device's internet connection and changing your passwords can significantly reduce potential harm.
