Sharing my IBAN with ONE person – I’d do that
If you ask your guests to provide their IBAN via an automated process on your website … then this IBAN would be stored ‘online’ in your WordPress database
Sharing my IBAN with a website of unknown security standards, which will store it online for future use indefinitely… NEVER
Let’s take the example of Free (an ISP and mobile network operator). A company far more vulnerable to cyberattacks than our websites : 5.1 million IBANs and other personal details were stolen by hackers