The article discusses a new version of the fight against viral infections. The use of certain bacterial enzymes that can possibly be used to destroy viral RNA and DNA is discussed. The proposed hypothesis is based on the available data regarding the struggle of bacteria with their viruses that infect themselves. Since opportunistic bacteria are capable of producing certain enzymes, in particular staphylococcal DNase and other bacterial restriction enzymes, they can cope with their own viruses, and may also be used to fight viruses that infect the human body.