London: Big Five, the five biggest internet companies of the world, which include Facebook, Microsoft, Yahoo, Twitter and Google have warned the Home Secretary that they would not co-operate voluntarily with Snooper`s charter.
In a letter to the Home Secretary Theresa May, the `big five` have said that the cost of tracking everybody`s email, Internet, and social media use is `expensive to implement` and highly contentious`.
In a report by The Guardian, May`s Snooper`s charter is aimed at the creation of new retention order requiring overseas internet companies to store the personal data of all their British-based users for up to 12 months.
The `big five` call this attempt to have `potentially seriously harmful consequences`.
The report said that the companies feel it would threaten the open nature of the Internet and would undermine their ability to offer a global service by companies working within the legal framework of their home jurisdiction.
Although the companies agree to make reasonable accommodations so that the citizens` privacy is not trampled.
The companies have said that they would consider using probes, known as `black boxes`, to intercept such data from overseas-based services as it passed through British communications networks.
Meanwhile, the home secretary said that access to communications data was essential for the law enforcement and intelligence agencies to do their job and they must be given the tools they need to fight crime, including pedophiles and terrorists, the report added.