When browsing the web, users often download various types of files that are saved directly to the user’s device. Such files can potentially contain malware or trigger the download of malicious software when opened, thus making users vulnerable to cyberattacks. Typical web browsers scan downloaded files for malware. However, such scans cannot detect malware in certain circumstances, e.g., new malware for which the signature is not known, large file size of the download, etc. This disclosure describes a sandbox environment for isolating files downloaded during web browsing and scanning such files for malware prior to being transferred to the device filesystem.
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Edukulla, Santosh Kumar, "Sandboxing Files Downloaded Via A Web Browser", Technical Disclosure Commons, (July 27, 2020)