"... with no concerns about security" seems to be a bad maschine translation.
The Chinese version says "(you) don't have to worry about security".
Nevertheless, it still doesn't change my impression. I read it like "(you) don't have to worry about security". The other interpretation "we didn't worry about security" seemed too unlikely.
It doesn't inspire confidence if they want me to be in a relaxed position. I'd expect them to raise concerns about security and take the initiative to show how secure their system is...