The Stop Online Piracy Act (SOPA) or the PROTECT IP Act could curtail free speech on the Internet. But should your ISP ever be legally obligated to prevent you from accessing restricted websites, it will have to find a way to monitor your online activity. In the absence of strict legal restrictions, your ISP is free to root through all the information you exchange online and use it as they see fit. You can proactively protect your privacy by visiting only websites that offer an encrypted connection and using a VPN overseas.”]
Source: https://www.csoonline.com/article/2130740/what-is-deep-packet-inspection-.html