hii all ..now my coin gone and cannot recover back try everything from backup ..That mean my wallet have been hack while wallet on staking ..
ur keys ur coins ur responsibility
as u described a transaction happend
its ur responsibility to take care ur keys ur unlocked wallet are not accessable by someone else
the biggest danger is have a wallet without password protection or unlock without checkbox "just for" checked
in both cases anyone with access to ur screen keybord can initiate a transaction