Gundremmingen plant in southern Germany was found to be riddled with computer viruses, including those which would allow attackers remote access to equipment for moving nuclear fuel rods.
Viruses, known as W32.Ramnit and Conficker, were discovered at the plant, which is located 75 miles northwest of Munich.
W32.Ramnit has the potential to give an attacker remote control over a system when it is connected to the internet and is also designed to steal files from infected computers.
The virus could be used by groups such as Islamic State to obtain nuclear secrets, bringing them one step closer to building a radioactive bomb.
The terrifying prospect of an ISIS nuclear attack was confirmed earlier this month when police searching the flat of Paris attacks suspect Salah Abdeslam found documents relating to a German nuclear base.
Investigators discovered the cache of files, which related to the Juelich base, in his Molenbeek flat when it was searched on March 18.
Full article: Nuclear power plant COMPROMISED: Fears grow as power plant affected by malware (Express)