Chrome engineers wish to limit HTTP cookie lifetime at an initial maximum value of one year, which they later plan to slowly shrink to a few days.
The capping of HTTP cookies is currently scheduled for Chrome 70, slated to be released in late October 2018.
Telemetry data gathered by the Chrome team suggests that a large number of HTTP-transmitted cookies have a lifespan bigger than a year.
It is just first step before they move to next. One of the goals here is fight with competing statistics services and advertising networks.
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