Even after modifying its privacy controls, Facebook seems to still have a lot of work to do. A number of major advocacy groups, including the ACLU, EFF, and CDT, sent Facebook an open letter detailing some outstanding issues with Facebook privacy. The letter acknowledged Facebook’s recent steps to more efficient privacy controls but also said that there are still some flaws.

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They also pointed out that the ‘Like’ button that Facebook had can be used to track user’s browsing activities. But this feature being so widely popular, Facebook needs to find a cooler privacy feature that would enable people to like articles without disclosing their identity, or in cases, maybe having an option to hide or show their identity.