Art. 29 WP: Cookie Sweep Combined Analysis

Cookie Sweep Combined Analysis, Report adopted on 3 February 2015 (WP229):
The Article 29 Working Party in partnership with national regulators with responsibility for enforcing Article 5(3) of the ePrivacy Directive 2002/58/EC, as amended by 2009/136/EC, conducted a sweep of up to 478 websites in the e-commerce, media and public sectors across 8 member states.
The sweep highlighted differences in the use of cookies across different target sectors and between the individual member states. The sweep also highlighted areas for improvement including a few cookies with duration periods of up nearly 8000 years. This is in contrast to an average duration of 1 to 2 years.
The sweep however also showed that 70% of the 16555 cookies recorded were third-party cookies. It was also shown that more than half of the third-party cookies were set by just 25 third-party domains.