The only one I know about is tosback, but that seems to be a bit stale:

https://tosback.org/

Google was also breached in Operation Aurora (2009), although a much more targeted breach:

https://en.wikipedia.org/wiki/Operation_Aurora

It’s a case of Gell-Mann Amnesia.

Waiting on the platform for a morning train that was nowhere to be seen, he asked Meta’s WhatsApp AI assistant for a contact number for TransPennine Express. The chatbot confidently sent him a mobile phone number for customer services, but it turned out to be the private number of a completely unconnected WhatsApp user 170 miles away in Oxfordshire.

Ah yes, what else to expect from »the most intelligent AI assistant that you can freely use«.