QR codes became a very easy way to share information and access links, which the pandemic also helped popularize with menu scanning. However, this method is not without its dangers.
Like any Internet tool, vulnerability will always exist. Being a form of connectivity that is so widely used, criminals take advantage of its popularity to attack users with false pages to steal data or download malicious files.
So there are several ways to take care of a situation, making a code scan as safe as possible.
The first thing to keep in mind will always be to be as protected as possible. This can be achieved by having the operating system in its latest possible version, be it Android either iOS, and that the cell phone supports. The same with the applications, which are updated and have been downloaded officially or with trusted APKs.
Criminals attack through any gap they find open, as if it were the window of a house. So the first thing to do is to have a secure phone.
Just as you should never open a link from a strange SMS, you should never access a QR code that is not what it should be. For example, going to a restaurant and that the menu is by this method, but when scanning it in the preview of the link or the page, something totally different from what it should be is seen.
In case this happens, one option to be sure is to look for the link that appears in the preview on the internet and verify that it does not have any alert or has been reported.
Do not share data
These codes are also often used in the middle of online shopping processes, however, it is better to avoid those cases because sensitive data is delivered in codes that are open. In that case, it is better to do the process from the official application of the bank or the store.
In this section there are several options to take into account, because there are tools that can help to perform a secure scan and others to verify the security of a website.
For the latter there is VirusTotal, which is a page and an application for Android, where a link is placed for her to do an analysis and generate an answer if the site is safe or not. In it you can also review files or other installed applications.
In case you want a safe scanning app, there are several alternatives for users the operating system of Google: QR Scanner-Safe QR Code Readerdeveloped by TrendMicro, Kaspersky QR Code Reader and Scanner Y Lionic Secure QR Code Scanner.
All of these make the scan as secure as possible, which can help complement all of the tips above. Although with the tool that the cell phone has to open QR codes it can also be done, taking into account the previous recommendations.
It is important to mention that this entire security process must be accompanied by good practices such as constantly changing passwords, not using the same password for several platforms, not sharing personal information on social networks, not accessing strange links, not sharing passwords. security via SMS and activate double verification to access certain platforms.