Securely launching files downloaded to potentially unsafe locations on a computer system

The present disclosure relates to protecting computer systems from installation of rogue shared libraries when executable files are launched. An example method generally includes detecting that a downloaded file has been written to an insecure location on the computing device. A computing device determines that the downloaded file includes at least a first executable component and, upon determining that the downloaded file includes executable components, generates a copy of the executable component in a protected repository on the computing device. The computing device overwrites the contents of the executable component with at least instructions to launch the copy of the downloaded file from the protected repository.