Downloading security updates from sources other than official Microsoft channels can lead to several dangers:
: Pirated "updates" may contain backdoors that allow hackers remote access to your system. Status of Microsoft Security Essentials (MSE) microsoft security essentials updates h33tterminator t 1010
Microsoft Security Essentials is an older antivirus tool that has largely been phased out: microsoft security essentials updates h33tterminator t 1010