[{'role': 'user', 'content': 'Analyze the following clause from a privacy policy and determine if it\'s fair or unfair. Also identify any privacy practices mentioned: Comcast also takes additional steps to increase the security and reliability of customer communications. We do not read your outgoing or incoming email, file attachments, video mail, private chat, or instant messages. However, we (along with our third-party providers) use software and hardware tools to help prevent and block "spam" emails, viruses, spyware, and other harmful or unwanted communications and programs from being sent and received over Comcast.net email and the Comcast Web Services. These tools may automatically scan your emails, video mails, instant messages, file attachments, and other files and communications in order to help us protect you and the Web Services against these harmful or unwanted communications and programs. You can learn more about Comcast\'s anti-spam approach at http://customer.xfinity.com/help-and-support/internet/reducing-spam-email/.'}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]