Don't shoot the QR code unnecessarily!?Dangerous QR code.

"Would you read this QR code?"

A suspicious behavior that tried to read the QR code at the end of last month became a hot topic.However, the damage was not reported, and there were several similar suspicious behavior, but it disappeared from the topic a few days later.However, as I have pointed out before, the QR code is a big danger that is not easy.Of course, after acknowledging the dangers, it is not something that can be used greatly because of its convenience and efficacy.

Is this the QR code here is useless?(Yahoo! JAPAN News Individual)

Many QR code is conscious of displaying the URL or introducing it on the website, but it has a wide variety of data, including URL, as used for QR code payment.It is possible.

Personal information is fraudulent just by shooting a QR code!?

The details are given to the above article, and in a nutshell, you can incorporate various devices in the QR code.Furthermore, as in the above article, it is no exaggeration to say that if you partner with a leader (app) that reads the QR code, you can manipulate your smartphone freely.In fact, it has been reported that the person who reads the QR code on the street corner has been made to be a LINE friend without permission, and a solicitation for events is received.Instead of joining events, they are guided to malicious sites and may be infected with fraud and malware (computer virus).

At present, it is possible to recognize the QR code and read the data even with a camera that is standard on the smartphone without entering the application.Just point the camera and recognize the QR code, usually only display the URL (site address), and if you do not tap it, you will not fly to the site, but depending on the smartphone settings, tap.You will move to the site without it.Many people tap without hesitation, and they are guided to malicious sites.In addition, as shown in the following article, the QR code is set up and suddenly peeling the fangs one day, that is, the same QR code that has been induced to a normal site suddenly begins to guide to a malicious site.There is also.

Be careful!Vulnerability in QR code?Measures to avoid being deceived by that seriousness

For anything, safety and convenience have a trade -off (inverted proportion).The more convenient, the more you sacrifice safety.The QR code also has vulnerabilities because of its convenience, and it is necessary to unconditionally trust.

Recently, Kobe University's research group pointed out a new QR code vulnerability.The following announcements at the 2021 computer security symbol (CSS2021) held last month.The explanation of this details will be made again.

1D2-2: About the recognition characteristics of the QR code and the vulnerability

◎ Yuki Hashimoto (Kobe University), Yuto Murai (Kobe University), Daichi Nishii (Kobe University), Shogo Nakajima (Kobe University), Yoshiaki Shiraishi (Kobe University), Masakatsu Morii (Kobe University).