loginizer

this is what the WP loginizer plugin is telling me... Does this mean someone is currently actively attempting to break in? suggestions to secure my site?

today i had a little scare, i have a new web site registered about a week ago. not using any NULLed or "free" themes, everything is up to date, i have "loginizer security". i got email notifications for fail attempts to login, (SURELY WASNT ME). 12 failed attempts, 6 lockouts from same IP. IP...