Apparently Bitrefill were hacked in a pretty sophisticated way. Honestly it's kind of an advertisement for them, paradoxically: they're one of the few long running sellers of goods and services for bitcoin that at least offer the right model: you pay a lightning invoice, anonymously, you get the thing. you might need an email or something, but that's OK. absolutely minimized risk of funds theft along the way (only exposed *very* briefly), absolutely minimized risk of leak of personal info to hackers (since you give them so little; almost nothing in fact; notice in particular that LN does a very good job of hiding the sender's origin from the receiver; not 100% perfect but exceptionally good with non custodial wallets, heck even custodial, perhaps, depending on details, though I absolutely do not recommend custodial LN, for different reasons).