Sadly, the only thing that you can do now is to increase your security settings by following the instructions here:
Security tips
. Furthermore, you may read this thread:
Recovering from Hijack [Info]
. Items lost due to a hijacking/scamming event aren't returned to the affected player. See:
Lost items
.
The opening post has been hidden as it both accuses another player by name and contains a link to a phishing site, neither of which are permitted on the Forums. The post is quoted below with the disallowed content redacted:
Original message details are unavailable.
Hello RS.
I have been scammed by [Edited], i've lost 300M.. Is there anything i can do to get it back?
There is a link on his youtube channel [Edited], there leads you to a fake site, when you login, he will automatic get your username and password...