Set your account's info or make an outgoing transaction!
ok, thx. How can i set my account's info? And did my account can be compromised? Do you think should i need to create a new one?
Use the button 'Info'
see here for more information (it's from NXT help, but XEL is based on the same technology)
https://nxtwiki.org/wiki/How-To:AnnouncePublicKeyhttps://nxtwiki.org/wiki/How-To:CreateAccount#Register_your_public_keyWhen sending NXT to a new account using the new account's address the resulting account is protected only by 64 bit account id which is somewhat weak and not by the 256 public key which provides ultimate protection.
[Edit] No need to create new account - you'll need to perform the same steps