Sci-Hub is a search engine that works in concert with a repository called Library Genesis (LibGen) to give researchers access to a cache of articles taken illegally from scientific journals. Currently the repository holds roughly 47 million articles. In addition to drawing on the LibGen repository, Sci-Hub also uses the login credentials of university employees to bypass institutional authentication barriers and access journal content to which the university has licensed access. When it accesses an article in this manner, Sci-Hub sends a copy of the article to the requesting party and also deposits a copy of the article in LibGen for future use by others.
Sci-Hub seems to obtain these login credentials by two means:
1. Academics who support the program willingly contribute their credentials to Sci-Hub;
2. Academics unwittingly give Sci-Hub their credentials in response to phishing campaigns.
Please be careful!
When considering requests like Sci-Hub's for your credentials, please remember that Marian University IT Policy prohibits sharing your credentials. There are at least two important reasons for this prohibition: