IT Management & Cyber Security

  In this blog explain Linux File System Architecture, File system Hierarchy atandard (FHS), Extended File System (EXT), Second Extended File System (EXT2), Second  Extended File System  (EXT2) (Cont’d), Second Extended File System (EXT2) (Cont’d) etc… Linux OS uses different file systems to store the data. As the investigators may encounter the attack source or victim systems to be running on Linux, they should have comprehensive knowledge regarding the storage methods it employs. The following section will provide you a deep insight about the various Linux file systems  and  their storage mechanisms. Linux File System Architecture The Linux file system architecture consists of two parts namely: User Space: The protected memory area where the user processes run and this area contains the available memory. Kernel Space: The memory space where the system supplies all kernel services through kernel processes. The users can access this space through the system call...

  In this blog explain The Encrypting File System | EFS is a feature of the Windows 2000 operating system that lets any file or folder be stored in encrypted form and decrypted only by an individual user and an authorized recovery agent. To protect files from mishandling and to ensure their security, the system should encrypt them. NTFS has Encrypting File System (EFS) as built-in feature. Encryption in file systems uses symmetric key encryption technology with public key technology for encryption. The user gets a digital certificate with a public key and private key pair. A private key is not applicable for the users logged on to the local systems; instead the system uses an EFS key to set the key for local users. Also Read :   New Technology File System (NTFS) – an Overview This encryption technology maintains a level of transparency to the users, who have encrypted the file. There is no need for users to decrypt the file when they access it to make changes. Again, after the...

  In this blog explain New Technology File System | NTFS (NT file system) is the file system that the Windows NT operating system uses for storing and retrieving files on a hard disk. New Technology File System (NTFS) is one of the latest file systems supported by Windows. It is a high-performance file system, which repairs itself; it supports several advanced features such as file-level security, compression, and auditing. It also supports large and powerful volume storage solutions such as self-recovering disks. NTFS provides data security as it has the capability to encrypt or decrypt data, files, or folders. NTFS uses a 16-bit Unicode method to character set naming of files and folders. This attribute of NTFS allows users around the world to manage their files in their native languages. It has fault tolerance for the file system. If the user makes any modifications or changes to the files, NTFS makes a note of all changes in specific log files...

  Tracks & Advanced Format of Sectors In this article explain hard disk track and diffrent andvance format of sector and there uses. Tracks Platters have two surfaces, and each surface divides into concentric circles called tracks. They store all the information on a hard disk. Tracks on the platter partition hold large chunks of data. A modern  hard disk  contains tens of thousands of tracks on each platter. The rolling heads read and write from the inner to outermost part of the disk. This kind of data arrangement enables easy access to any part of the disk; therefore, hard disks get the moniker as random access storage devices. Each track contains a number of smaller units called sectors. Every platter has the same track density. The track density refers to the compactness of the track circles so that it can hold maximum number of bits within each unit area on the surface of the platter. It also determines the storage capacity of data on the hard disk. It is a comp...