31results about How to "Avoid bypassing" patented technology

The invention provides an application program anti-attack method and system based on code injection and behavior analysis. The method is characterized in that a protection code is injected into an application program needing to be protected, and attack behaviors in the application program are recognized. The method comprises the steps of injecting the protection code into the application program needing to be protected, and mounting a hook point at a preset key calling position, wherein the protection code monitors marked parameters and operation behaviors of calling a key function in the application program; running a unified protection plug-in, performing security risk analysis based on the operation behavior, the marked parameters and the context information, and identifying whether a suspicious webshell exists in a monitored code in the application or not; and sending out corresponding alarm prompt information according to the security risk analysis result, or directly blocking theoperation of the application program. According to the method, through reasonable deployment of the protection codes, attacks can be detected and self-protection can be carried out during operation,so that less missing report and false report, more comprehensive and accurate protection and faster vulnerability response are realized.

The embodiment of the invention provides a message detection method and device, equipment and a storage medium. The method includes the following steps: acquiring a message on a CAN bus; analyzing themessage to obtain a data sequence; and judging whether the message is an abnormal message according to at least one message detection model corresponding to the data sequence, wherein the message detection model is obtained by training a sample data sequence in a sample message. According to the technical scheme of the embodiment of the invention, abnormal messages at the instruction level and the parameter level can be identified, unknown intrusion behaviors can be found, bypasses and omissions can be avoided, and the cost waste caused by manual maintenance rules can be reduced.

The invention relates to an injection attack detection method and device, a server and a storage medium, and relates to the technical field of computers. The embodiment of the invention provides a method for detecting an injection attack without depending on a regular expression. The method comprises the steps of generating a to-be-executed query statement based on input data of a user; obtaininginput data of a query statement, obtaining context information of the query statement, detecting whether processing logic of the query statement is changed or not according to the context informationand the input data, if it is detected that the processing logic of the query statement is changed, determining that an injection vulnerability exists in the query statement, and terminating executionof the query statement. Through the detection mode, the false alarm rate and the missing alarm rate can be reduced, and the attack detection accuracy is improved.

The invention relates to a Java security protection method and device based on a JVM sandbox and black and white lists and a medium. The method comprises the following steps: automatically and repeatedly starting a Java application in a JVM sandbox so as to determine a first strategy according to an exception encountered in each starting, and adding the first strategy into a strategy file until the Java application is successfully started; configuring a white list according to the strategy file; configuring a second strategy through the strategy management interface according to the known path with the security hole to form a blacklist, and limiting the API under the path with the security hole to execute Java reflection through the blacklist; and running the Java application according to the white list and the black list, and managing hardware and network resources which can be accessed by the Java application. The operation boundary of the unknown Java application is limited through cooperation of the white list and the blacklist, potential safety hazards caused by the fact that the Java application bypasses the white list through reflection are avoided through the blacklist, the defects in the prior art are overcome, and safety protection of the Java application is enhanced.

The invention discloses vehicle intrusion detection and prediction model training methods and devices, and a storage medium. The vehicle intrusion detection method can comprise the steps: controller area network (CAN) messages on a CAN bus in the vehicle operation process are monitored; message fragments are generated according to the monitored CAN messages, each message fragment comprises the corresponding N continuous CAN messages, and N is a positive integer larger than one; and aiming at the message fragment generated each time, the next CAN message after the message fragment is predictedthrough a prediction model trained in advance, and according to the predicted next CAN message after the message fragment, whether the vehicle intrusion behavior occurs or not is determined. By applying the vehicle intrusion detection and prediction model training methods and devices, and the storage medium, the accuracy of the detection result can be improved.

The invention discloses a list extending method. The list extending method comprises steps that a server is used to determine a first group of at least one medium in a to-be-extended list according to a medium association network; the server is used to acquire the medium capable of satisfying requirements in the first group according to a prefabricated condition; the server is used to add the medium capable of satisfying the requirements to the to-be-extended list in order to extend the to-be-extended list. The medium capable of satisfying the requirements in the first group is determined according to the conventional medium association network and a medium type list, and therefore the corresponding conventional medium list is extended, and then a problem of efficacy-losing of a conventional trusted list or a conventional untrusted list is reduced.

The invention discloses a mechanical tube cleaner. The mechanical tube cleaner consists of three portions which are a hollow left hemisphere, an annular hollow cylinder and a hollow right hemisphere respectively; and the left hemisphere and the right hemisphere are separately connected to the two ends of the annular hollow cylinder to form an integrated structure. The tube cleaner mainly changes the sealing mode of the original tube cleaning ball and the inner wall of a seabed tube, circumferential linear sealing is designed into annular belt shaped surface sealing, by the belt shaped surfacesealing, a bypass circumstance generated in a running process due to the fact that upstream and downstream circumferential linear sealing of an imported M-brand tube cleaning ball is poor is avoided,the pressure difference between upstream and downstream is maintained, and can also be maintained even if the flow is ultra-low, and thus, the tube cleaning ball can keep moving forwards by driving force generated by the pressure difference; and when the tube cleaner has ultra-low flow, the upstream and the downstream are sealed effectively, and normal tube cleaning operation and gas condensate pushing operation are realized.

The invention provides an application security protection method, an application client and an ACR server, and the application security protection method comprises the steps: sending application client information to the ACR server; receiving a random key sent by the ACR server and a pre-stored check file list; according to the random key and the check file list, encrypting the check file list togenerate a first encrypted information list; sending the first encrypted information list to an ACR server for verification; after the ACR server passes the verification, generating a first admissionidentifier according to the first encryption information list and storing the first admission identifier; and when needing to be connected with the APP server, sending the first admission identifier and the application client information to the APP server for verification. According to the embodiment of the invention, through a dual-verification mode, a hacker is prevented from obtaining sensitiveinformation of a user or disseminating illegal information by cracking an application client, so that the information security of the user is protected.

The invention relates to an air handling and air conditioning system (100) intended to provide fresh air to the interior of a volume (200), preferably a building, the system comprising at least one heat exchanger module with dual air flow allowing heat transfer and transfer of water vapour between the two air flows, the system being designed to be able to function in a mode for cooling the building, in which the two air flows are respectively comprised of an exterior air flow (F1) intended to be introduced into the building (200), and a cooler and drier stale air flow (F2) coming from the interior of the building. According to the invention, the system also comprises: means (20) for determining the relative humidity of the exterior air flow (F1) at the inlet to said heat exchanger module; and control means (6) configured to order a contribution of heat to the exterior air flow (F1) before its entry into the module if its relative humidity exceeds a predetermined value.

The present invention provides an access point device arranged to receive data packets from one or more client devices and transmit them along an area network characterised wherein the access point device comprises security means arranged to configure the client data packets such that they are directed only to one or more permitted area network device(s).

This application relates to an artificial intelligence-based method for detecting illegal accounts and related devices, belonging to the field of artificial intelligence technology. The method includes: obtaining the account attribute data set of the user account associated with the target subject; from the first data set and the second Obtain the first average number and the second average number of the mobile phone number corresponding to the field data of the field to be detected in the data set, and determine the field to be detected with the first average number less than the second average number as the detection field; The field data of the detection field is used as a connection edge, and the mobile phone number is used as a vertex to construct an account detection graph; based on the field data of the first type of field in the account detection graph, the account detection graph is graph-clustered to obtain account clusters, said The first type of field indicates the field related to the account login address; based on the field data of the second type of field, it is verified whether the account cluster is abnormal. This application effectively improves the detection accuracy and reliability of illegal accounts.

The embodiment of the invention provides electronic equipment, an authentication method, a storage medium and a program product. The electronic equipment comprises a mainboard and an information input interface; the mainboard comprises a power supply unit and a processing unit; the processing unit comprises an information authentication module; the information authentication module is respectively connected with the information input interface and the power supply end and the control end of the power supply unit; the information input interface is also connected with the power supply end of the power supply unit; and the information authentication module is used for acquiring to-be-authenticated information through the information input interface, and sending a power-on enable signal to the power supply unit after determining that the to-be-authenticated information passes authentication, so that the power supply unit is started to supply power to at least a part, which is related to startup operation, of the mainboard. The security of the electronic equipment is improved.

The invention discloses card making equipment which comprises a concave-convex character coding module, a first hot stamping module and a second hot stamping module, wherein the concave-convex character coding module comprises a first area and a second area which are opposite, the concave-convex character coding module is provided with a card inlet and outlet opening located between the first area and the second area, and the direction from the first area to the second area is perpendicular to the card inlet and outlet direction of the card inlet and outlet opening; the first hot stamping module is arranged in front of the concave-convex character coding module and corresponds to the first area or corresponds to the side, away from the second area, of the first area; the second hot stamping module is arranged in front of the concave-convex character coding module and corresponds to the second area or corresponds to the side, away from the first area, of the second area. According to the technical scheme, after the card is sent out from the card inlet and outlet, one of the two opposite directions can be selected to move so as to enter the first hot stamping module or the second hot stamping module, and thus, the movement path is simplified, and the occupied space of the card making equipment is saved.

The invention belongs to the field of engines, and discloses an engine lubrication system and an engine. According to a method, a crankcase, a side cover and a bridge connection mechanism are included, a crankshaft is arranged in the crankcase, and a main oil passage of the crankshaft is arranged in the crankshaft; the side cover is arranged on one side of the crankcase, and a dark oil passage isarranged in the side cover; the bridge connection mechanism includes a casing and a sealing portion, the sealing portion is fixedly arranged on the outer side wall of the casing, one end of the casingis inserted into an outlet of the dark oil passage, and the sealing portion is located on the outer side of the outlet of the dark oil passage; and when the engine works, the casing moves towards aninlet of the main oil passage of the crankshaft under the pressure effect of the high pressure oil in the dark oil passage, so that the sealing portion is pressed against the inlet end face of the main oil passage of the crankshaft, the outlet of the dark oil passage and the inlet of the main oil passage of the crankshaft are connected in a sealed manner, and the high-pressure oil in the dark oilpassage enters the main oil passage of the crankshaft through the casing. The lubricating system can shorten the lubricating oil passage line, it is not necessary to increase the oil pump flow rate and oil pressure, and the probability of tube burst is reduced.

The invention relates to a composite alarm detector for a museum showcase. The composite alarm detector comprises a power supply module, an ultrasonic generation module, an ultrasonic receiving module, a mobile detection module, a main control module, a wireless communication module and an alarm host, wherein the power supply module is used for supplying power to each component and is internally provided with a rechargeable battery. The invention further provides an anti-theft alarm method for the museum showcase. The anti-theft alarm method comprises the steps of periodically transmitting ultrasonic waves into a closed space of the showcase; collecting reflected ultrasonic waves in real time; detecting the spatial change of the showcase, specifically, demodulating the ultrasonic wave collected each time, and if the attribute of the demodulated ultrasonic wave is inconsistent with the attribute of the initial ultrasonic wave, triggering an alarm; and detecting the movement change of the showcase and triggering an alarm. According to the invention, any change of the showcase cavity and the cavity space form is monitored by using ultrasonic waves to generate an alarm, the acceleration is synchronously detected, the moving state of the showcase is monitored, the situation that the showcase is directly moved away under the condition that the space in the showcase is not touched is prevented, the functions are practical, and the comprehensive monitoring of the showcase condition is realized.

The invention discloses an infrared light liquid drop detection device and method.The infrared transmitting device comprises an infrared transmitting tube (1), a light shading piece (2) and a lens (3) which are sequentially arranged from left to right, the convex face of the lens (3) extends into a through groove (19) and is located below a dripping nozzle (11), and an arc-shaped gap (4) used for light passing is formed in the end face of the light shading piece (2); the arc-shaped gap (4) is overlapped with the lower half part of the plane of the lens (3), the length of the arc-shaped gap (4) is smaller than the diameter of the convex surface of the lens (3), and the convex surfaces of the infrared transmitting tube (1) and the lens (3) are located on the same water surface line; the infrared receiving device comprises an infrared light-transmitting piece (9) fixedly arranged in the machine shell (17), and an infrared receiving array (10) is fixedly arranged on the left end face of the infrared light-transmitting piece (9). The liquid drop detection device has the beneficial effects that the structure is compact, the detection reliability is high, false detection and missing detection are avoided, and the liquid drop detection precision is improved.