Security Monitor 2012 is a recent infection that started spreading on many computer systems. It is categorized as a a rogue antivirus program and it strongly reming of infamous Antivirus Antispyware 2011. The program warns that your system is badly infected and recommends purchasing its full version in order to fix the problems.
The program uses a fake scanner and runs it with each system reboot. The program runs a scanner and warns about some system infections detected on your machine. In order to remove them you will be asked to purchase a full version of Security Monitor 2012. Unfortunately, it is not a solution to your problem. If you pay for this badware, you will simply lose your money, but the problem will remain. The thing is that Security Monitor 2012 is a badware itself and it must be removed as soon as possible. That is the main problem that your system has.
If you ask about a bunch of security notifications and pop up ads, they are also caused by Security Monitor 2012. They are a part of a project by computer hackers who only want to earn as much money as possible. Rogue programs can look really similar to legitimate security tools so many computer users fall for this trick really easily.
If it happened for you to find this malicious program on your machine, please remove Security Monitor 2012 as soon as possible. Use a reliable antispyware program for the best results.