Safety Antispyware is a rogue antivirus application that will scan your computer and claim that many files are infected with viruses and need to be deleted. The main problem is that these claims are falsified. Not only do you likely not have a virus (other than this monstrosity), but the files it lists as being infected are legitimate windows files and deleting them will likely damage your windows installation. So, do not follow their advice, neither should you purchase their software. They will claim that the only way to fix your system is purchasing their software. Please read more for how to remove safety antispyware.