Abstract: By way of example, a method includes, responsive to a user request to download, from the internet, a downloadable file with executable content, downloading a portion of the downloadable file, wherein the downloadable file is not executable with the portion; after download the portion of the downloadable file, scanning the portion of the downloadable file for malware characteristics to classify the downloadable file; and completing downloading the downloadable file only after determining, based on the scanning of the portion of the downloadable file, that the downloadable file is not malware.

Abstract: There is disclosed in one example a hardware computing platform, including: a processor; a memory; a network interface; and a security module, including instructions to cause the processor to: receive a request to download a file via the network interface; download a first portion of the file into a buffer of the memory; analyze the first portion for malware characteristics; assign a security classification to the file according to the analysis of the first portion; and act on the security classification.

Abstract: There is disclosed in one example a hardware computing platform, including: a processor; a memory; a network interface; and a security module, including instructions to cause the processor to: receive a request to download a file via the network interface; download a first portion of the file into a buffer of the memory; analyze the first portion for malware characteristics; assign a security classification to the file according to the analysis of the first portion; and act on the security classification.