A significant number of sites blocked by USOM are blocked after being reported. Either someone reported the site for some unknown reason, or USOM may have blocked it themselves because of a random link within the site (I was once exploring random distributions and then visited the website of a discontinued Chinese distribution out of curiosity and the website was either sold or expired, was full of pornography and gambling ads). Debian based “Pardus” is used in many government agencies and schools so I don’t think it’s because of malware thing