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Police class cybercrime as computer fraud, computer sabotage and intercepting data. Computer sabotage was particularly rife in 2013 and German authorities are having a hard time keeping on top of the crime boom, the Welt reported on Tuesday. Only one in ten cases of computer sabotage are solved.

And cyber attacks by digital racketeers are also becoming increasingly frequent. Crimes are reported but seldom lead to a successful conclusion, according to the latest Crime Statistics report, which Interior Minister Thomas de Mazière will present in Berlin on Wednesday.

Investigators counted about 64,500 cases of internet crime nationwide last year, an increase of 0.7 percent on 2012. In 2013, only every fourth case was solved.

And police unions said many cyber crimes went unreported. Rainer Wendt, head of German police union DPolG, told Welt: “For some people, the shame of their own stupidity and greed is the driving motive of silence."

And André Schulz, the chairman of the police union BDK, estimated the number of unreported cases at 90 percent .

"The perpetrators often sit abroad. Their crimes are therefore not statistically recorded in Germany,” he said. "In many departments the investigators still have no or a very slow internet connection."

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