Re: Recognising (or not) QR codes

Jörg Lorenz, 2025-07-03 18:17:

On 03.07.25 17:26, Arno Welzel wrote:

Jörg Lorenz, 2025-07-03 17:22:
>

On 03.07.25 14:19, Allodoxaphobia wrote:

On Wed, 2 Jul 2025 17:02:20 +0200, Jörg Lorenz wrote:

On 02.07.25 15:24, VanguardLH wrote:

My concern is a QR code can contain a URL.

>
That is their purpose.

>
And scammers/crackers/evil-doers see an opportunity.

>
QR-Codes in public places are very insecure. And in addition QR-codes
should never be used for financial transactions or other security
sensitive activities.

>
Not the QR-Codes themself are insecure - its the websites they link to.

 
The code is very often faked to divert to such a (insecure) site.
Popular where payment processes are involved like EV-chargers for instance.

Yes, but then the danger is still that people trust websites they open
by using the QR code and not the QR code itself.

By calling QR codes "dangerous" you give the wrong impression, that just
scanning a QR code and checking, what website it links to, is dangerous.
And this is of course not the case. Just don't trust any websites which
get opened using a QR code scan - only view them and do never enter any
personal data there.


--
Arno Welzel
https://arnowelzel.de