Files up to 650 MB can be uploaded to the website, or sent via email (max. The aggregated data from these Contributors allows a user to check for viruses that the user's own antivirus software may have missed, or to verify against any false positives. In November, 2018, the Cyber National Mission Force, a unit subordinate to the U.S. VirusTotal aggregates many antivirus products and online scan engines called Contributors. The company's ownership switched in January 2018 to Chronicle, a subsidiary of Google. Launched in June 2004, it was acquired by Google in September 2012. VirusTotal is a website created by the Spanish security company Hispasec Sistemas. Bernardo Quintero, Emiliano Martínez, Víctor Manuel Álvarez, Karl Hiramoto, Julio Canto, Alejandro Bermúdez, Juan A.