Hi
hacker use the system to get into you computer.
check that your Anti-virus is up to date, and run a full scan.
change your password, for this account, and do a clean install.
the helper have will offer help, but you may already be hack.
you will not know if you have, jeffrey1 say do not click on links, from SL, he set of rules will keep you safe.
do not tell people about your real life information, even about your computer. this will give a hacker a easy time to hack you.
enjoy hope you are ok.
bye