Beijing Qihoo Technology Company Limited

Aijun Jiang

Bo Zhang

Zhifeng Liu

Tong Yao

Qinglong Kong

The invention discloses a cloud security-based file processing method and apparatus. The method comprises: generating a signature identifier uniquely corresponding to an unknown program file downloaded locally according to signature related information of the unknown program file; sending a query request to a server end to query whether the unknown program file is a malicious program or not, wherein the query request carries the signature identifier of the unknown program file and a part or all of the file features of the unknown program file; and receiving a feedback message from the server end, and performing subsequent process on the unknown program file according to the feedback message, wherein the server end generates the feedback message according to the signature identifier and the file features. The invention solves the problem of breaking through the cloud killing by utilizing a Trojan in the prior art and at the same time can also reduce the time from discovering a malicious program to killing the malicious program, thereby accelerating the speed of fighting against a new malicious program, reducing the information storage amount of the server as well and in turn guaranteeing the security of a client program.

Cloud security-based file processing by generating feedback message based on signature information and file features

The invention discloses a scanning device, a cloud management device, a method and system for checking and killing a malicious program. Therein, a cloud management device for checking and killing a malicious program comprises: a second transmission interface; a first indicator configured to generate a first scanning content indication according to characteristics of a newborn malicious program and system environment information transmitted by a client device; a first matcher configured to obtain via the second transmission interface feature data of the unknown program file transmitted by the client device, and hereby perform matching in known records of feature data of malicious programs; and a second indicator configured to generate a second scanning content indication when the first matcher fails to match to a known record, the second scanning content indication comprising scanning a specified attribute of the unknown program file and/or a specified attribute of the contextual environment of the unknown program file, and transmit the same to the client device through the second transmission interface.

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Beijing, China

Aijun Jiang