I explicitly make spending money online harder for myself as a protection from things like this. (Well, primarily I also don't play any games with micro-transac

I explicitly make spending money online harder for myself as a protection from things like this. (Well, primarily I also don't play any games with micro-transactions for one because they're universally a rip-off designed to exploit addictive personalities. Games based around these shady tactics should never have been tolerated, let alone allowed to become the standard to such a degree where even real AAA $60 video games are now infested with this. It's disgusting.) Very few things and services have my payment information saved -- usually just Apple and PayPal have it saved. I never save credit or debit card details to the keychain so the browser doesn't auto-complete it. I always go out of my way to set payment confirmation dialogues to always appear. Whenever I subscribe to something, I use PayPal or the App Store subscription feature. In case it's a yearly recurring subscription, I always go out of my way to cancel auto renewal. If nothing else, I delete the authorisation from PayPal for automatic renewal. I always go and double-check if some place saved my credit card details or not and if they have then I delete them. While not completely fool-proof, these steps have made it easier to more carefully manage my online spendings and not to suckered into parting with my money.