[pasabagi]

Acquaintances of mine had the personal data used to give a believable aura to automated blackmail attempts ('we know what porn you're watching', etc). Which didn't work, but still, it's quite threatening having some random python script from Macedonia knowing a bunch of details about your private life.

[PeterisP]

One thing that works is the scams where if someone is traveling (more common pre-Covid..) and their friends/relatives get a message from them saying that they're in trouble (for example, with corrupt local cops) and need some money right now. But that mostly feeds off not leaks, but generally available social media data, as that's always fresh.