the main problem is that: big Fb self

You might think that Facebook or the device manufacturer is trustworthy,

said Serge Egelman, a privacy researcher at the University of California, Berkeley, who studies the security of mobile apps.

But the problem is that as more and more data is collected on the device — and if it can be accessed by apps on the device — it creates serious privacy and security risks.

In the furor that followed, reported NYT, Facebook’s leaders said that the kind of access exploited by Cambridge in 2014 was cut off by the next year, when Facebook prohibited developers from collecting information from users’ friends. But the company officials did not disclose that Facebook had exempted the makers of cellphones, tablets and other hardware from such restrictions.