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Hyperjacking
Hyperjacking is an attack in which a hacker (computer security), hacker takes malicious control over the hypervisor that creates the virtual environment within a virtual machine (VM) host. The point of the attack is to target the operating system that is below that of the virtual machines so that the attacker's program can run and the applications on the VMs above it will be completely oblivious to its presence. Overview Hyperjacking involves installing a malicious, fake hypervisor that can manage the entire server system. Regular security measures are ineffective because the operating system will not be aware that the machine has been compromised. In hyperjacking, the hypervisor specifically operates in stealth mode and runs beneath the machine, it makes it more difficult to detect and more likely to gain access to computer servers where it can affect the operation of the entire institution or company. If the hacker gains access to the hypervisor, everything that is connected ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hypervisor
A hypervisor (also known as a virtual machine monitor, VMM, or virtualizer) is a type of computer software, firmware or hardware that creates and runs virtual machines. A computer on which a hypervisor runs one or more virtual machines is called a ''host machine'', and each virtual machine is called a ''guest machine''. The hypervisor presents the guest operating systems with a virtual operating platform and manages the execution of the guest operating systems. Unlike an emulator, the guest executes most instructions on the native hardware. Multiple instances of a variety of operating systems may share the virtualized hardware resources: for example, Linux, Windows, and macOS instances can all run on a single physical x86 machine. This contrasts with operating-system–level virtualization, where all instances (usually called ''containers'') must share a single kernel, though the guest operating systems can differ in user space, such as different Linux distributions with the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
VMware ESXi
VMware ESXi (formerly ESX) is an Enterprise software, enterprise-class, Native hypervisor, type-1 hypervisor developed by VMware for deploying and Server (computing), serving Hardware virtualization, virtual computers. As a type-1 hypervisor, ESXi is not a software application that is installed on an operating system (OS); instead, it includes and integrates vital OS components, such as a kernel (operating system), kernel. After version 4.1 (released in 2010), VMware renamed ESX to ''ESXi''. ESXi replaces Service Console (a rudimentary operating system) with a more closely integrated OS. ESX/ESXi is the primary component in the VMware Infrastructure software suite. The name ''ESX'' originated as an abbreviation of Elastic Sky X. In September 2004, the replacement for ESX was internally called ''VMvisor'', but later changed to ESXi (as the "i" in ESXi stood for "integrated"). Architecture ESX runs on bare metal (without running an operating system) unlike other VMware products. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Qubes OS
Qubes OS is a security-focused desktop Linux distribution that aims to provide security through isolation. Virtualization is performed by Xen, and user environments can be based on (with official support) Fedora or Debian, or (with community support "these templates may be somewhat less stable, since the Qubes developers do not test them") Whonix, Ubuntu, Arch Linux, CentOS, or Gentoo among other operating systems; e.g. Qubes Windows Tools support Microsoft Windows 7 and later. Systems like Qubes are referred to in academia as ''Converged Multi-Level Secure (MLS) Systems''. Other proposals of similar systems have surfaced and SecureView is a commercial competitor, however Qubes OS is the only system of the kind actively being developed under a free and open-source software (FOSS) license. Security goals Qubes implements a ''Security by Isolation'' approach. The assumption is that there can be no perfect, bug-free desktop environment: such an environment counts millions ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Virtual Machine Escape
In computer security, virtual machine escape is the process of a program breaking out of the virtual machine on which it is running and interacting with the host operating system. A virtual machine is a "completely isolated guest operating system installation within a normal host operating system". In 2008, a vulnerability () in VMware discovered by Core Security Technologies made VM escape possible on VMware Workstation 6.0.2 and 5.5.4. A fully working exploit labeled ''Cloudburst'' was developed by Immunity Inc. for Immunity CANVAS (commercial penetration testing tool). Cloudburst was presented in Black Hat USA 2009. Previous known vulnerabilities * Xen pygrub: Command injection in grub.conf file. * Directory traversal vulnerability in shared folders feature for VMware * Directory traversal vulnerability in shared folders feature for VMware * Xen Para Virtualized Frame Buffer backend buffer overflow. * Cloudburst: VM display function in VMware * QEMU-KVM: PIIX4 emulation does not ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hacker (computer Security)
A security hacker is someone who explores methods for breaching defenses and exploiting weaknesses in a computer system or network. Hackers may be motivated by a multitude of reasons, such as profit, protest, information gathering, challenge, recreation, or evaluation of a system weaknesses to assist in formulating defenses against potential hackers. The subculture that has evolved around hackers is often referred to as the "computer underground". Longstanding controversy surrounds the meaning of the term " hacker." In this controversy, computer programmers reclaim the term ''hacker'', arguing that it refers simply to someone with an advanced understanding of computers and computer networks and that ''cracker'' is the more appropriate term for those who break into computers, whether computer criminals (black hats) or computer security experts ( white hats). A 2014 article noted that "the black-hat meaning still prevails among the general public". History Birth of subc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Virtual Machine
In computing, a virtual machine (VM) is the virtualization/ emulation of a computer system. Virtual machines are based on computer architectures and provide functionality of a physical computer. Their implementations may involve specialized hardware, software, or a combination. Virtual machines differ and are organized by their function, shown here: * ''System virtual machines'' (also termed full virtualization VMs) provide a substitute for a real machine. They provide functionality needed to execute entire operating systems. A hypervisor uses native execution to share and manage hardware, allowing for multiple environments which are isolated from one another, yet exist on the same physical machine. Modern hypervisors use hardware-assisted virtualization, virtualization-specific hardware, primarily from the host CPUs. * Process virtual machines are designed to execute computer programs in a platform-independent environment. Some virtual machine emulators, such as QEMU and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Operating System
An operating system (OS) is system software that manages computer hardware, software resources, and provides common daemon (computing), services for computer programs. Time-sharing operating systems scheduler (computing), schedule tasks for efficient use of the system and may also include accounting software for cost allocation of Scheduling (computing), processor time, mass storage, printing, and other resources. For hardware functions such as input and output and memory allocation, the operating system acts as an intermediary between programs and the computer hardware, although the application code is usually executed directly by the hardware and frequently makes system calls to an OS function or is interrupted by it. Operating systems are found on many devices that contain a computer from cellular phones and video game consoles to web servers and supercomputers. The dominant general-purpose personal computer operating system is Microsoft Windows with a market share of aroun ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
VENOM (security Vulnerability)
Venom or zootoxin is a type of toxin produced by an animal that is actively delivered through a wound by means of a bite, sting, or similar action. The toxin is delivered through a specially evolved ''venom apparatus'', such as fangs or a stinger, in a process called envenomation. Venom is often distinguished from poison, which is a toxin that is passively delivered by being ingested, inhaled, or absorbed through the skin, and toxungen, which is actively transferred to the external surface of another animal via a physical delivery mechanism. Venom has evolved in terrestrial and marine environments and in a wide variety of animals: both predators and prey, and both vertebrates and invertebrates. Venoms kill through the action of at least four major classes of toxin, namely necrotoxins and cytotoxins, which kill cells; neurotoxins, which affect nervous systems; myotoxins, which damage muscles; and haemotoxins, which disrupt blood clotting. Venomous animals cause tens of thousa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mandiant
Mandiant is an American cybersecurity firm and a subsidiary of Google. It rose to prominence in February 2013 when it released a report directly implicating China in cyber espionage. In December 2013, Mandiant was acquired by FireEye for $1 billion, who eventually sold the FireEye product line, name, and its employees to Symphony Technology Group for $1.2 billion in June 2021. In March 2022, Google announced that it would acquire the company for $5.4billion and integrate it into its Google Cloud division, with the firm becoming fully incorporated in September 2022. Founding Kevin Mandia, a former United States Air Force officer who serves as the company's chief executive officer, founded Mandiant as Red Cliff Consulting in 2004 before rebranding to its current name in 2006. In 2011, Mandiant received funding from Kleiner Perkins Caufield & Byers and One Equity Partners to expand its staff and grow its business-to-business operations, providing incident response and genera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
VMware
VMware, Inc. is an American cloud computing and virtualization technology company with headquarters in Palo Alto, California. VMware was the first commercially successful company to virtualize the x86 architecture. VMware's desktop software runs on Microsoft Windows, Linux, and macOS. VMware ESXi, its enterprise software hypervisor, is an operating system that runs on server hardware. In May 2022, Broadcom Inc. announced an agreement to acquire VMware in a cash-and-stock transaction valued at $61 billion. History Early history In 1998, VMware was founded by Diane Greene, Mendel Rosenblum, Scott Devine, Ellen Wang and Edouard Bugnion. Greene and Rosenblum were both graduate students at the University of California, Berkeley. Edouard Bugnion remained the chief architect and CTO of VMware until 2005, and went on to found Nuova Systems (now part of Cisco). For the first year, VMware operated in stealth mode, with roughly 20 employees by the end of 1998. The compan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Malware
Malware (a portmanteau for ''malicious software'') is any software intentionally designed to cause disruption to a computer, server, client, or computer network, leak private information, gain unauthorized access to information or systems, deprive access to information, or which unknowingly interferes with the user's computer security and privacy. By contrast, software that causes harm due to some deficiency is typically described as a software bug. Malware poses serious problems to individuals and businesses on the Internet. According to Symantec's 2018 Internet Security Threat Report (ISTR), malware variants number has increased to 669,947,865 in 2017, which is twice as many malware variants as in 2016. Cybercrime, which includes malware attacks as well as other crimes committed by computer, was predicted to cost the world economy $6 trillion USD in 2021, and is increasing at a rate of 15% per year. Many types of malware exist, including computer viruses, worms, Trojan ho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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