I've just received strange transaction from unknown address: transaction hash is
6e41f6acb7541cf4ffeddf126dbd87a01092be8d021a897350a6a332ba67a071, the sender sent
0.0215 BTC to about 3000 outputs (
0.00000546 BTC to each), where one of the output was mine, full transaction is about
95 KB of size. I used the address (which is on of the output) only for private use and didn't share it explicitly.
What can be the purpose of such transaction? Does this sender is trying to spy on all receivers, or what it can be?