A controversy was sparked in summer 2006, when files kept by the Securitate (Communist Romania's secret police) on Frunda and 28 other politicians, including the UDMR's Markó and Attila Verestóy, were declassified by the Romanian Intelligence Service (SRI). The opening of archived documents uncovered that Frunda had been the subject of a "network file" (a type of document which is generally associated with Securitate informants). Upon reviewing it, Frunda concluded that it was actually evidence of the Securitate having attempted and failed to enlist him, stressing that he never agreed to be drawn into collaboration. He added that he had signed two documents, confirming, respectively, his refusal to collaborate, and his pledge to maintain secrecy over having been contacted by the secret police. According to Frunda, only the latter document was present among those handed down by the SRI, which led him to question whether the file was complete.