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...

Understanding File Systems in this computer not only computes data but also stores data. The issue of file structure and  data storage  is of prime concern. To solve this issue, manufacturers employ an effective storing and organization of the data on the computer called as a file system. The file system makes it easy to find and access the data. Data storage devices like hard disks or CD-ROMs can use the file system to store the data. The file system divides the file into smaller pieces and then stores them to  hard disks  or flash memory in clusters. A file system is a set of data types employed for: Storage Hierarchical categorization Management Navigation Access Recovering the data Major file systems include FAT, NTFS, HFS, Ext2, Ext3, etc. Users can access the files using the graphical user interfaces or command line user interfaces. File systems organize the data in the form of tree-structured directories. These are generally file cabinets and folders. Director...