Enhanced browsing with security scanning

摘要

A method scans a second web page linked to a first web page being displayed by a browser in a browser window. The method identifies, in the first web page, a target link to the second web page. Prior to receiving a user selection of the target link, the method prefetches content from the second web page and loads it into a safe cache before receiving the user selection of the target link and before the content of the second web page is opened by an application configured to provide access to the content of the second web page. The method scans the prefetched content from the second web page for a security threat, within the safe cache, which is configured to prevent the prefetched content from altering a memory location or storage location external to the safe cache.

主权项

1. A method of secure scanning of a second web page linked to a first web page being displayed by a browser in a browser window on a client computing device, the method comprising:
identifying, in the first web page, a target link to the second web page, wherein the target link is identified from one or more links that are contained within the first web page; prior to receiving a user selection of the target link or of an indicator associated with the target link, prefetching content from the second web page, the content including web page data, applets, or scripts; loading the prefetched content from the second web page into a safe cache on the client computing device before receiving the user selection of the target link or of the indicator associated with the target link and before the content of the second web page is opened by an application configured to provide access to the content of the second web page on the client computing device; scanning the prefetched content from the second web page for a security threat, within the safe cache, wherein the safe cache is configured to prevent the prefetched content from altering a memory location or storage location external to the safe cache; detecting placement of a cursor proximate to the target link or the indicator associated with the target link; and in response to the detecting:
in response to identifying a security threat with the prefetched content, presenting a warning along with one or more selectable options, including an option to ignore the warning; andin response to identifying no security threat with the prefetched content or receiving from the user a selectable option to ignore the warning, causing display of a second window comprising the prefetched content.