Hello.
A friend of me got hacked and lost 3k waves.
The Waves was send to this address :
3PGS9W5aZ4kdBFJJ9jxmgjLW8qfqu1b3Y66
I saw the address that the OP mentioned, it seems that in this forum nobody uses that address.A friend of me got hacked and lost 3k waves.
The Waves was send to this address :
3PGS9W5aZ4kdBFJJ9jxmgjLW8qfqu1b3Y66
However, it is very difficult, to find out a real hacker to detect.
Looks like your friend's Waves coin has been melted into some other coins.
https://wavesexplorer.com/address/3PGS9W5aZ4kdBFJJ9jxmgjLW8qfqu1b3Y66/tx
It's quite difficult to find out the real hackers, because they have 1000 other addresses to transfer coins to.