Samsung phone users reported that their devices are randomly sending camera roll photos to their contacts without permission. (maybe , it is "machine learning" combined with a feature called "machine sending")

One user on Reddit claimed that their Samsung Galaxy S9 Plus sent an entire photo gallery but there was no record of it, and was only able to see a record of it on T-Mobile logs. Meanwhile, another user took to Samsung’s forum to allege “premature sending” on their Galaxy S9 smartphone.

https://threatpost.com/samsung-investigates-claims-of-spontaneous-texting-of-images-to-contacts/133675/