But the virus has resisted multiple efforts to remove it from Creech's computers, network security specialists say.

CNN: Computer virus hits U.S. drone fleet

The early warnings let the administrators react instantly to adjust filters to remove the dangerous payloads on a virus or quarantine suspect messages until a cure is available from the anti-virus companies.

BBC: Watching the web for viruses

The researchers also managed to get an Android antivirus app to download and install fake virus signatures that then identified the antivirus tool as a virus and gave the user the opportunity to remove it.

FORBES: Researchers Find Flaws In Android Apps That Leave Millions Vulnerable To Password, Online Banking Credentials, And Email Data Theft