Can university revoke the degree when data were edited/fabricated? Is student or supervisor at fault? Can the student be sent to prison or fined?
A prominent German example is former minister of defence zu Gutenberg. He lost his title and his job because of plagiarism years after the fact. 

https://en.m.wikipedia.org/wiki/Karl-Theodor_zu_Guttenberg 

However, this may very well work differently in other countries.