I know @sonny.dharmawan!
Unfortunately there are more shit coins then great altcoins with great projects and teams behind. But i guess it is what it is and like you mention we need to be careful and make a strong research before we invest :)
As well i suggest to keep track of all your passwords from the wallets as for example i was a little bit distracted regarding this and now i can not remember the password from my BitShares wallet!