1. A method of certifying a virtual machine image in a cloud computing environment, the method comprising: installing an anti-malware in a virtual machine; using the anti-malware to scan the virtual machine for presence of malware; finding that the virtual machine is free of malware; in response to finding that the virtual machine is free of malware, removing the anti-malware from the virtual machine and generating an original fingerprint of the virtual machine; storing the original fingerprint in the virtual machine; saving the virtual machine as a virtual machine image after removing the anti-malware from the virtual machine and storing the original fingerprint in the virtual machine; and listing the virtual machine image in a catalog of a public cloud computing environment.