For ethical reasons I try to avoid reading books downloaded from illegal and pirated websites.
I was self studying a topic by reading a certain book. Due to COVID-19 my nearby library is closed. I googled the book's details and I came across the full PDF version of the book on the websites of two reputed universities.
Is it it unethical to read the PDF downloaded from a university website? How the university is able to upload the PDF? Will it be unethical if I read from the PDF downloaded from the websites of these reputed universities?
Please help me in overcoming my confusion.