1. A computer-implemented method for securely and dynamically managing privileges for computer processes associated with downloaded files, the computer-implemented method comprising: generating, by a computer system, a verification fingerprint of a downloaded file responsive to downloading the downloaded file from a source address; storing, by the computer system, in a file logging database, the verification fingerprint indexed with the source address of the downloaded file, generating, by the computer system, a runtime execution environment, the runtime execution environment comprising a restricted security context; launching, by the computer system, a process in the restricted security context based on the downloaded file, wherein the downloaded file was downloaded by the computer system; generating, by the computer system, a runtime fingerprint of the downloaded file responsive to launching the process in the restricted security context; requesting, by the computer system, from the file logging database stored outside of the restricted security context, the source address associated in the file logging database with the verification fingerprint of the downloaded file which matches with the runtime fingerprint; requesting, by the computer system, from a process control policy database stored outside of the restricted security context, a process control policy associated in the process control policy database with a resource address which matches with the source address of the downloaded file as obtained from the file logging database, wherein requesting the process control policy occurs responsive to receiving the requested source address; and dynamically elevating or degrading, by the computer system, responsive to receiving the requested process control policy, execution privileges of the process in the restricted security context according to the process control policy; wherein the computer system comprises a computer processor and electronic memory.