From the TT code of practice- outrage
Protecting Your Information
We take protecting your data seriously, and will do our utmost to employ appropriate organisational and technical security measures to protect your against unauthorised disclosure or processing.
Unfortunately we cannot guarantee the security of transmitting information via the internet.We have tried to create a secure and reliable website and mobile application for our users. However, we have no responsibility or liability for the security of personal information transmitted via the internet.
http://www.talktalk.co.uk/legal/privacy-policy/?utype=talktalk