When you have win32/small.ca on the system, you get Windows Action Center alerts, that you have a virus. Most of antivirus software programs can not catch this virus. Win32/small.ca gets into the computer without permission or knowledge of the user. Virus uses some system vulnerabilities and security exploits. It is a good idea to update all critical windows updates. When infected, you will get the security alert message at the bottom right corner, which asks you to remove win32/small.ca. This trojan can be delivered by SPAM email also, so do not open any attachements from the people you do not know. Win32/small.ca will not only display unstoppable ads. It is able to open a backdoor in the system giving the full access over the computer to cybercriminals. Like this, all your sensitive information can be stolen including, but not limited to your identity, logins to facebook, twitter and other social networks, banking information, credit card numbers. That's why we put this threat on extremely high risk level.
Modern trojan and viruses are almost impossible to remove them manually. One of the best ideas to protect your PC from viruses is to back up your system regularly and, if infected, you can make a system restore to the point there you did not have the infection. Sadly there are parasites who know how to avoid this too. They infect the system and do nothing for a month or two. So sometimes you don't have a restore point where your system is clean.
2-spyware.com advises you to scan your system with reputable antispyware software. If they identify the virus, they will be able to delete it. This virus can not stay resident on your system, as is posing a high risk to the system and your privacy. Get rid of win32/small.ca as soon as you can. Try using these antispyware programs: SpyHunter, STOPzilla, Malwarebytes Anti Malware.
Information added: 10/18/13 05:13;
information updated: 10/18/13 05:13