Abstract: A method may include determining that a data transfer has been initiated within an application executed on the user device. The method may include accessing one or more device signals indicating device use characteristics of the user device. The method may include accessing one or more application signals associated with the application executed on the user device. The method may include generating a first confidence value and a second confidence value representing a likelihood that the data transfer is invalid based at least in part on the one or more application signals and the one or more device signals. The method may include transmitting encrypted data may include at least one of the first confidence value, and the second confidence value, or a data transfer identifier to a computing system.

Abstract: This application relates to apparatus and methods for identifying fraudulent transactions. In some examples, a computing device trains a machine learning process with labelled historical transactions. The computing device may then receive transaction data identifying a purchase transaction, such as at a store or on a website. The computing device may execute the trained machine learning process based on the transaction data to generate a trust score. The machine learning process may determine whether the transaction is being made with a trusted device and trusted payment form, for example, to generate the trust score. The trust score may be used to determine whether the purchase transaction is to be allowed. In some examples, the transaction is allowed if the generated trust score is beyond a threshold. In some examples, the computing device may distrust a trusted device or payment form based on one or more events.

Abstract: A rotation guidance apparatus belonging to the technical field of oil drilling equipment. An end part of a lower connector has a ball-socketed ball-joint rod, and a drill bit is connected to the ball-socketed ball-joint rod. Several circumferentially and evenly distributed piston holes are provided in a side wall of the lower connector, wherein a piston matches each piston hole and a piston rod connected to the piston is movably connected to the ball-socketed ball-joint rod. An eccentrically-placed valve core is connected to a controller provided in an upper connector, wherein a working face of the eccentrically-placed valve core is opposite to the piston holes and rotation of the eccentrically-placed valve core makes the pistons in the piston holes move to control the rotation guidance of the ball-socketed ball-joint rod.

Abstract: Disclosed is a rotation guidance apparatus belonging to the technical field of oil drilling equipment. An end part of a lower connector (3) has a ball-socketed ball-joint rod (12), and a drill bit (1) is connected to the ball-socketed ball-joint rod (12); several circumferentially and evenly distributed piston holes are provided in a side wall of the lower connector (3), a piston matches each piston hole, and a piston rod (11) connected to the piston is movably connected to the ball-socketed ball-joint rod (12); and a eccentrically-placed valve core (17) is connected to a controller provided in an upper connector (4), a working face of the eccentrically-placed valve core (17) is opposite to the piston holes, and rotation of the eccentrically-placed valve core (17) makes the pistons in the piston holes move to control the rotation guidance of the ball-socketed ball-joint rod (12).