For home users:

- Beware of pages that require software installation. Do not allow new software installation from your browser unless you absolutely trust both the Web page and the provider of the software.

- Scan with an updated antivirus and anti-spyware software any program downloaded through the Internet. This includes any downloads from P2P networks, through the Web and any FTP server regardless of the source.

- Beware of unexpected strange-looking emails, regardless of their sender. Never open attachments or click on links contained in these email messages.

- Enable the "Automatic Update" feature in your Windows operating system and apply new updates as soon as they are available.

- Always have an antivirus real-time scan service. Monitor regularly that it is being updated and that the service is running.

- Free security tools are available at https://www.trendmicro.com