Abstract: A nonvolatile memory device comprises a memory cell array comprising a plurality of memory blocks, an address decoder that selects one of the memory blocks in response to an input address and generates a first control signal and a second control signal, a plurality of metal lines connected with the memory blocks and extending along a first direction, a plurality of pass transistors that connect the address decoder with a first subset of the metal lines connected with the selected memory block in response to the first control signal, and a plurality of ground transistors that supply a low voltage to a second subset of the metal lines connected with unselected memory blocks in response to the second control signal. The ground transistors have channels that extend along a second direction perpendicular to the first direction.

Abstract: Provided are an Internet Protocol (IP)-based filtering device and method and a legitimate user identifying device and method. The IP-based filtering method includes receiving packets from terminals, determining whether the packets are transmitted based on legitimate user IPs, transmitting the packets to a web server when it is determined that the packets are transmitted based on the legitimate user IPs, and determining whether a capacity capable of processing the packets exists in the web server when it is determined that the received packets are not the packets transmitted based on the legitimate user IPs, and transmitting the packets to the web server when it is determined that the capacity exists in the web server, and blocking the packets when the capacity does not exist.

Abstract: Provided are an apparatus and method of detecting and controlling a privilege level violation process. The apparatus monitors whether higher-privileged processes depend on information provided from lower-privileged objects or denies the higher-privileged processes to access the lower-privileged objects. The apparatus is provided in a process, and monitors whether a process accesses to a lower-privileged object. The apparatus gives a warning message or denies an access of the process to the lower-privileged object when it detects that the higher-privileged process access to the lower-privileged object. Therefore, the apparatus of detecting and controlling a privilege level violation process detects weaknesses that may be caused by privilege level violation, thus allowing a system to be safely operated.

Abstract: An apparatus and method for preventing an attempt to perform malicious activities using web browser weaknesses are provided. A file protection module monitors attempts to access at least one file resource when the web browser executes a program, and allows or denies access. A registry protection module monitors attempts to access at least one registry resource when the web browser executes a program, and allows or denies access. A process protection module monitors attempts to execute or terminate at least one process when the web browser executes a program, and allows or denies the execution or termination.

Abstract: Provided are an apparatus and method of detecting and controlling a privilege level violation process. The apparatus monitors whether higher-privileged processes depend on information provided from lower-privileged objects or denies the higher-privileged processes to access the lower-privileged objects. The apparatus is provided in a process, and monitors whether a process accesses to a lower-privileged object. The apparatus gives a warning message or denies an access of the process to the lower-privileged object when it detects that the higher-privileged process access to the lower-privileged object. Therefore, the apparatus of detecting and controlling a privilege level violation process detects weaknesses that may be caused by privilege level violation, thus allowing a system to be safely operated.

Abstract: An apparatus and method for managing the execution of ActiveX control are provided. The apparatus includes a server list managing module for managing an approved server list for allowing the execution of predetermined ActiveX control and a disapproved server list for disallowing the execution of predetermined ActiveX control, an API hooking module for detecting installation or execution of ActiveX control in a HTML (Hyper Text Markup Language) document while visiting a web site, and a process module for reading the approved and disapproved server lists if the API hooking module detects the execution of the ActiveX control, allowing the execution of each ActiveX control only within approved web sites, and interrupting the execution of ActiveX control in disapproved web sites.

Abstract: A computer including a main body in which a system is built, a peripheral device coupled to the main body, a power supplying part to supply power to the system and/or the peripheral device, an interface part to communicate with an external device, and a controller to control the power supplying part to apply power to the system but not to the peripheral device if a power-saving power applying signal is received through the interface part.