CNSAS revealed that Voiculescu acted as an informer for the Securitate by the names of "Felix" and "Mircea". He later claimed that he only collaborated "two or three times" for economic espionage., and he had cooperated with the Securitate as "all Romanians did" during the communist period. The latter statement drew criticism from journalist Cristian Tudor Popescu, who wrote that "Mr. Voiculescu knows very well there were millions of Romanians who didn't have anything to do with the Securitate and others who simply refused to work for it." Voiculescu denies, however, having been an official collaborator (with a signed agreement) or an officer of the Securitate and is appealing the CNSAS' ruling to that effect. He has said he will resign from the Senate if the verdict is not overturned on appeal. He blamed the initial findings against him on Băsescu, who, according to Voiculescu, launched a campaign to undermine him.