Abstract: The present disclosure belongs to the technical field of melt blown dies, and provides a preparation method for a low friction coating for a melt blown die. In the present disclosure, pretreatment, activation treatment, chemical deposition, and calcination are conducted on a surface of the melt blown die in sequence to deposit an Ni—P—Re coating on the surface of the melt blown die, thereby reducing the friction coefficient of the melt blown die. In the present disclosure, surface smoothness and hardness of the coating are improved by limiting the composition and ratio of a deposition solution used for the chemical deposition. The results of examples show that the low friction coating for a melt blown die prepared by the preparation method provided by the present disclosure has a thickness of 3.2 ?m, hardness of 820 HV, roughness Ra of 0.02 ?m, and a friction coefficient of 0.35 under non-lubricating conditions.

Abstract: Interprocess communication between processes that run on a host operating system of a computer is performed by way of a protected temporary file. File access operation on the temporary file is hooked to detect writing to the temporary file. When a process writes a message to the temporary file, a verification is performed to determine whether or not the process is authorized to access the temporary file. When the process is authorized to access the temporary file, the process is allowed to write the message to the temporary file. This allows another process that is intended to receive the message to read the message from the temporary file and act on the message. Otherwise, when the process is not authorized to access the temporary file, the process is blocked from writing the message to the temporary file.

Abstract: Operating system events are monitored and a file change request of a process is detected. If the process is suspicious, then the file to be changed is backed up and then the process is allowed to change the file as requested. If it is later determined that the process is ransomware, the process is blocked and further file backups are halted. The original file is recovered and the encrypted file is discarded. If it is later determined that the process is not malicious, then further file backups are halted. Any backup files are discarded. Ransomware may be detected by comparing a file extension of the process with file extensions of any files requested to be changed, by comparing file extensions of any files requested to be changed, or by an analysis of behavior of the process itself.

Abstract: A method for encrypting a file using a combination of an electronic device and a protection communication-enabled (PCE) wireless device is provided. The method includes using an encryption/decryption engine executing on the electronic device to encrypt a first flag string, which is a binary string stored in a header of the file, with a digest value to create an encrypted flag string. The digest value is associated with the PCE wireless device, which is a device having a transmission application program installed thereon for enabling interaction between the PCE wireless device and the encryption/decryption engine. The method also includes encrypting at least a portion of the file using the digest value and a first password provided by a user, thereby generating an encrypted file that includes an encrypted version of at least a portion of the file, the encrypted flag string, and the first flag string.