It seems you are having problems with MacKeeper, which is a Malware program disguised as protection or maintenance software.
You must have downloaded it at some point.
Read here for removing method.
MacKeeper is highly invasive malware* that can de-stablize your operating system. It is also unethically marketed and a rip-off. Positive reviews of it are known to have been paid for by the developers, Zeobit.
Further opinion on it and how to uninstall MacKeeper malware:
Do NOT download or use the ‘MacKeeper uninstaller’ from the Zeobit site, as this will cause even more damage to your operating system.
This is also worth reading:
Equally phoney is iAntivirus:
* The expression ‘malware’ is a general term used by computer professionals to mean a variety of forms of hostile, intrusive, or annoying software.