> Примеры закладок в вин тоже никто привести не может, но все знают, что они есть.

Суслика могут видеть далеко не все. Вернее видеть могут не только лишь все, мало кто может это делать...

https://www.opennet.me/opennews/art.shtml?num=44950
> Утечка мастер-ключа Microsoft скомпрометировала защиту Secure Boot
> Группа анонимных исследователей опубликовала сведения об универсальном ключе,
> позволяющем разблокировать любое устройство, защищённое при помощи
> технологии Secure Boot и использующее загрузчик Microsoft

http://www.nytimes.com/2013/09/06/us/nsa-foils-much-internet...
> Microsoft asserted that it had merely complied with “lawful demands” of the government,
> and in some cases, the collaboration was clearly coerced.
> Some companies have been asked to hand the government the encryption keys to all customer
> communications, according to people familiar with the government’s requests.
> N.S.A. documents show that the agency maintains an internal database of encryption keys for specific commercial products, called a Key Provisioning Service,

http://mashable.com/2013/09/11/fbi-microsoft-bitlocker-backdoor/
> Biddle, a believer in what he refers to as "neutral technology," never agreed to put a backdoor in
> BitLocker. And other Microsoft engineers, when rumors spread that there was one,
> later denied that was ever a possibility.