Can my ISP see what I’m doing online?

This data is used to create consumer profiles to better understand customers, while it can also be packaged up and sold off to third parties. The most recognisable symptom of this will come in the form of targeted ads which use your behaviour to try and flog you stuff.

If you’re concerned about any of this, then your best bet is to use a Virtual Private Network, or VPN. VPNs hide your IP address, which means that no nosy entities (ISPs included) are able to gather any information on what you do online. VPNs can cost a fair bit of money, however, and they often limit your bandwidth, slowing your overall connection down.