Trojan horse virus detection device and method

Abstract

The invention discloses a Trojan virus detection device and method, and belongs to the technical field of information security. According to the Trojan virus detection device and method, the fact that Trojan viruses may steal information by controlling a computer loudspeaker to emit ultrasonic signals is found for the first time, the Trojan virus detection device and method are provided for the discovery, and the ultrasonic signals emitted by the computer loudspeaker are collected and then filtered and amplified; and decoding the processed ultrasonic signals to obtain corresponding frequency spectrum information, further analyzing the frequency spectrum information, and judging that the to-be-detected equipment is invaded by Trojan viruses if signal peak values exceed a preset threshold value in a preset sampling period. Therefore, the Trojan virus which steals the information stored in the to-be-detected equipment by controlling the loudspeaker of the to-be-detected equipment to emit the ultrasonic signal can be effectively detected, and the information security of the equipment can be maintained.

Description

technical field [0001] The invention belongs to the technical field of information security, and more specifically relates to a Trojan horse virus detection device and method. Background technique [0002] With the popularization of mobile smart terminals, malicious Trojan horse attacks and malicious Trojan horse detection technologies on mobile smart terminals have attracted more and more attention. Malicious Trojan horse programs can steal the private information stored on the user's device by concealing implantation into the user's device and send it to the attacker; at the same time, it will also maliciously consume the resources of the user's device, such as CPU, memory, network bandwidth, battery power, etc. It brings serious privacy threats and tariff consumption to users. [0003] Under the existing technical conditions, in order to resist malicious Trojan horse attack technology, the current mainstream Trojan horse detection methods mainly include: [0004] Monito...

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Problems solved by technology

[0005] However, none of the above-mentioned channels has paid attention to the fact that confidential data or private information may be leaked in the form of ultrasonic waves through the speaker of the device, and no effective detection method has been proposed for such Trojan horse viruses.

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