kai_hiwatari (1642285) writes "Yahoo! has updated its Additional Terms and Conditions and now they have got the right to scan user communications without any restriction. The change in the ATOS, noticed by Which?, is under Section c of Acceptance of Terms of Yahoo!’s Additional Terms of Services.
According to the ATOS, it is the responsibility of the Yahoo! user to warn his contacts that Yahoo! will scan their messages."
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