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Concept in computer security
In computer security, executable-space protection marks memory regions as non-executable, such that an attempt to execute machine code in these regions
Executable-space_protection
Anomaly in computer security and programming
support executable-space protection, called Data Execution Prevention. Proprietary add-ons include: BufferShield StackDefender Executable-space protection does
Buffer_overflow
Technology used in CPUs
address space as non-executable, preventing the processor from running any code stored there. This technique, known as executable-space protection or Write
NX_bit
Operating system memory security feature
(write xor execute, pronounced W xor X) is a security policy in operating systems and software frameworks. It implements executable-space protection by ensuring
W^X
Way to control memory access rights on a computer
Memory protection for computer security includes additional techniques such as address space layout randomization and executable-space protection. Segmentation
Memory_protection
Computer security exploit technique
attacker to execute code despite the presence of security defenses that would otherwise prevent it, such as executable-space protection and code signing
Return-oriented_programming
Means of compressing an executable file
executable. When this compressed executable is executed, the decompression code recreates the original code from the compressed code before executing
Executable_compression
Software security techniques
Buffer overflow protection is any of various techniques used during software development to enhance the security of executable programs by detecting buffer
Buffer_overflow_protection
Topics referred to by the same term
policy Payment protection policy Tax protection policy Protectionism, a trade protection policy Technology Executable space protection policy This disambiguation
Protection_policy
Computer security technique
ASLR randomly arranges the address space positions of key data areas of a process, including the base of the executable and the positions of the stack, heap
Address space layout randomization
Address_space_layout_randomization
Executable file format
Portable Executable (PE) is a file format for native executable code on 32-bit and 64-bit Windows operating systems, as well as in UEFI environments. It
Portable_Executable
Compiling bytecode to machine code at runtime
architectures this runs into a problem due to executable space protection: arbitrary memory cannot be executed, as otherwise there is a potential security
Just-in-time_compilation
Way of using computer memory
address spaces or regions of a single address space, called user space and kernel space. This separation primarily provides memory protection and hardware
User_space_and_kernel_space
Division of computer's primary memory into separately relocatable segments or sections
provide per-page memory protection and swapping using only paging. Some use the CS register to provide executable-space protection on processors lacking
Memory_segmentation
Software distributor
Journal, which could be rendered as .pdf, .zip, .bpg, or .html. Executable space protection Comparison of Linux distributions Security-focused operating
Openwall_Project
Module Unified Extensible Firmware Interface § Secure Boot Executable-space protection The protection of data in its non-moving state, usually on magnetic or
List of cybersecurity information technologies
List_of_cybersecurity_information_technologies
Arbitrary code execution exploit
exploit technique that allows an attacker to execute code in presence of security measures such as non-executable memory and code signing. It was presented
Sigreturn-oriented programming
Sigreturn-oriented_programming
and eventually support was added for the NX (No eXecute) bit to implement executable-space protection. Core reengineered P6-based microarchitecture used
List of Intel CPU microarchitectures
List_of_Intel_CPU_microarchitectures
Computer architecture treating code and data similarly, though not usually identically
modify itself. A disadvantage of these methods are issues with executable space protection, which increase the risks from malware and software defects.
Modified_Harvard_architecture
Type of computer architecture
addressing to several existing ISAs such as x86, MIPS, and RISC-V. Executable-space protection Harvard architecture The Memory Management Glossary: Tagged architecture
Tagged_architecture
Code intended as a payload to exploit a software vulnerability
Shellcode is executable code intended to be used as a payload for exploiting a software vulnerability. The term includes shell because the attack originally
Shellcode
access control Software executable space protection Operating system-level virtualization Virtualisation Userspace protection Others Linux SELinux, AppArmor
Comparison of open-source operating systems
Comparison_of_open-source_operating_systems
Unix-like operating system
instruction and data space are split and only code in (read-only) instruction space can be executed, termed executable-space protection. However, attacks
Minix_3
Compile time buffer checks Mandatory access control Software executable-space protection grsecurity RSBAC Alpine Linux Yes Unknown PaX Discontinued in
Comparison of Linux distributions
Comparison_of_Linux_distributions
Computer security attack
a subroutine that is already present in the process executable memory, bypassing the no-execute bit feature (if present) and ridding the attacker of
Return-to-libc_attack
2003 American spaceflight accident
piece of the insulating foam broke off from the Space Shuttle external tank and struck the thermal protection system tiles on the orbiter's left wing. Similar
Space Shuttle Columbia disaster
Space_Shuttle_Columbia_disaster
Software anomaly
memory space of the executing program. Since the attacker needs to determine where executable code that can be used resides, either an executable payload
Stack_buffer_overflow
Microsoft's implementation of the shared library concept in Windows and OS/2
for Windows EXE files – that is, Portable Executable (PE) for 32-bit and 64-bit Windows, and New Executable (NE) for 16-bit Windows. As with EXEs, DLLs
Dynamic-link_library
Garment worn to protect a human in space
A space suit (or spacesuit) is an environmental suit used for protection from the harsh environment of outer space. It mainly protects from outer space’s
Space_suit
Modular space station in low Earth orbit
The International Space Station (ISS) is a space station in low Earth orbit (LEO). It is the product of the International Space Station program and is
International_Space_Station
Layer of protection in computer systems
In computer science, hierarchical protection domains, often called protection rings, are mechanisms to protect data and functionality from faults (by
Protection_ring
Computer fault caused by access to restricted memory
stack overflow Attempting to execute a program that does not compile correctly. (Some compilers[which?] will output an executable file despite the presence
Segmentation_fault
dual-address-space facility support, ESA also allows data spaces, which contain no executable code. A machine may be divided into Logical Partitions (LPARs), each with
IBM Enterprise Systems Architecture
IBM_Enterprise_Systems_Architecture
Combined executable file for multiple processor types or operating systems
Cross-platform software DOS stub Fat pointer Linear Executable (LX) New Executable (NE) Portable Executable (PE) Position-independent code (PIC) Side effect
Fat_binary
Security and privacy features of the iOS operating system
data. iOS also employs memory protection techniques like address space layout randomization (ASLR) and non-executable memory, and includes features like
Security_and_privacy_of_iOS
Core of a computer operating system
resource management are defining the execution domain (address space) and the protection mechanism used to mediate access to the resources within a domain
Kernel_(operating_system)
Computer exploit using just-in-time compilation
purpose is to produce executable data, a JIT compiler is one of the few types of programs that cannot be run in a no-executable-data environment. Because
JIT_spraying
American space and aeronautics agency
Aeronautics and Space Administration (NASA /ˈnæsə/) is an independent agency of the U.S. federal government responsible for the United States' civil space program
NASA
Portion of an object file containing executable instructions
the corresponding section of the program's virtual address space that contains executable instructions. The term "segment" comes from the memory segment
Code_segment
Numeric value with an unclear meaning
determine if the executable image contained relocatable memory references (normal), the newly implemented paged read-only executable image, or the separated
Magic_number_(programming)
Type of directory bundle
contain executable code include applications, frameworks, and plugins. This kind of bundle usually contains one file representing executable code, and
Bundle_(macOS)
Reusable superheavy-lift general-purpose launch vehicle
heavy-lift launch vehicle under development by American aerospace company SpaceX. Currently built and launched from Starbase in Texas, it is intended as
SpaceX_Starship
Instructions directly executable by a computer
from source code. But, unlike machine code, bytecode is not directly executable by a CPU. An exception is if a processor is designed to use bytecode as
Machine_code
useful gadgets are found in the address space after they return the address on the stack would lead to non-executable stack with a high probability. To remedy
Blind return-oriented programming
Blind_return-oriented_programming
Project aiming to reduce the risk of attacks on Linux systems
enforce memory protections by restricting mprotect() on any architecture; although memory may not initially be executable, it may become executable later, so
Exec_Shield
Windows 9x computer virus
Portable Executable (PE) files used by Windows programs. When an infected program is run, the virus becomes memory-resident and infects other executable programs
CIH_(computer_virus)
Aerospace engineering campus in California, United States
leaders joined in an ecumenical prayer for the space age: "We dedicate this building then to the protection of our land, to the discovery of our universe
Space_Park
serious injury. These include incidents during flight or training for crewed space missions and testing, assembly, preparation, or flight of crewed and robotic
List of spaceflight-related accidents and incidents
List_of_spaceflight-related_accidents_and_incidents
Russian cosmonaut and politician (born 1937)
first woman in space, having flown a solo mission on Vostok 6 on 16 June 1963. She orbited the Earth 48 times, spent almost three days in space, is the only
Valentina_Tereshkova
Optical disc authoring software
Shrink is designed to be easy to use. It is contained within a single executable file that is one megabyte in size. The program features a DeCSS decryption
DVD_Shrink
Linux distribution based on musl and BusyBox
security, Alpine compiles all user-space binaries as position-independent executables with stack-smashing protection. Because of its small size and rapid
Alpine_Linux
Spaceplane component of the Space Shuttle
The Space Shuttle orbiter was the spaceplane component of the Space Shuttle, a partially reusable orbital spacecraft system that was part of the discontinued
Space_Shuttle_orbiter
NASA super heavy-lift expendable launch vehicle used in the Artemis Program
The Space Launch System (SLS) is an American two-stage super heavy-lift expendable launch vehicle used by NASA. The primary launch vehicle for the Artemis
Space_Launch_System
Computer systems programming special block code
resources directly. In a low-level microcontroller, the chip might lack protection modes or lack a memory management unit (MMU). In these chips, the execution
Interrupt_handler
Protection of software, films, music, other media
Copy protection, also known as content protection, copy prevention and copy restriction, is any measure to enforce copyright by preventing the reproduction
Copy_protection
SpaceX private launch site
SpaceX Starbase, previously known as SpaceX South Texas Launch Site and SpaceX private launch site, is an industrial complex and rocket launch facility
SpaceX_Starbase
State of being protected from memory access bugs
return-to-libc attack and defense techniques such as the non-executable stack and address space layout randomization. Randomization prevents most buffer overflow
Memory_safety
Space exploration program conducted by the Soviet Union from 1951 to 1991
thermal protection system design of the US Space Shuttle Orbiter, with a maximum payload of 30 metric tons (slightly higher than that of the Space Shuttle)
Soviet_space_program
2020 video game included in Microsoft's Edge browser
Object Manager Open XML Paper Specification Portable Executable DLL EXE Registry Resource Protection Security Account Manager Server Message Block Shadow
Surf_(video_game)
Indian national space and aeronautics agency
The Indian Space Research Organisation (ISRO /ˈɪsroʊ/) is the national space agency of India, headquartered in Bengaluru, Karnataka. It serves as the
ISRO
SpaceX satellite Internet constellation
for the Protection of the Dark and Quiet Sky from Satellite Constellation Interference was created to manage these new man-made obstacles to space exploration
Starlink
Novell-compatible computer-readable software
the NLM executable function was very limited. In early NetWare versions (prior to v4.x), all processes were executed in the kernel address space, without
NetWare_Loadable_Module
Spacecraft without people on board
executed unless otherwise instructed. A robotic spacecraft for scientific measurements is often called a space probe or space observatory. Many space
Uncrewed_spacecraft
Processor register which changes or controls the general behavior of a CPU
of CR4.SEE. Fischer, Stephen (2011-09-21). "Supervisor Mode Execution Protection" (PDF). NSA Trusted Computing Conference 2011. National Conference Services
Control_register
Formula Native executable formats include: executable file, object file, and shared library, but exclude executable files that are not executed via a processor-native
List_of_file_formats
Proposed human Mars program by SpaceX
colony. As of July 2019, SpaceX had not explained its plans for the spacecraft's life-support systems and radiation protection, and for making use of resources
SpaceX Mars colonization program
SpaceX_Mars_colonization_program
Fictional futuristic supersoldiers
In the fictional universe of Warhammer 40,000, the Space Marines, also known as the Adeptus Astartes, are superhuman warrior-monks who fight for the Imperium
Space Marine (Warhammer 40,000)
Space_Marine_(Warhammer_40,000)
Computer art subculture
for intros are the 64k intro and the 4K intro, where the size of the executable file is restricted to 65536 and 4096 bytes, respectively. In other competitions
Demoscene
Memory data structure in Intel processors
processor mode that allows memory protection), the GDT defines: Code segments: regions of memory that contain executable instructions. Data segments: areas
Global_Descriptor_Table
Businessman and public official (born 1971)
former public official who is the CEO and largest shareholder of Tesla and SpaceX. Musk has been the wealthiest person in the world since 2025, and became
Elon_Musk
Combined military forces of the United States
Squadron. The 18th Space Defense Squadron, collocated with the Combined Space Operations Center, executes command and control of the Space Surveillance Network
United_States_Armed_Forces
Partially-reusable medium-lift launch vehicle by SpaceX
safety margins for the protection of the International Space Station. The only failed mission of the Falcon 9 v1.1 was SpaceX CRS-7, which was lost during
Falcon_9
NASA space probe launched in 1977
is a space probe launched by NASA on September 5, 1977, as part of the Voyager program, to study the outer Solar System and the interstellar space beyond
Voyager_1
Effort by SpaceX to make rockets that can fly multiple times
SpaceX has privately funded the development of orbital launch systems that can be reused many times, similar to the reusability of aircraft. SpaceX has
SpaceX reusable launch system development program
SpaceX_reusable_launch_system_development_program
Passage of an object through the gases of an atmosphere from outer space
targets Space capsule – Type of spacecraft Space Shuttle thermal protection system – Space Shuttle heat shielding system Paper plane launched from space "Stardust
Atmospheric_entry
2026 film by Travis Knight
Prince of Eternia who was raised on Earth after fleeing his home for his protection. Artie Wilkinson-Hunt as young Adam. Camila Mendes as Teela, Duncan's
Masters of the Universe (2026 film)
Masters_of_the_Universe_(2026_film)
Graphical user interface for the Amiga computer
'e'-protection-flag (AmigaDOS: Hold, Script, Pure, Archived, Read, Writeable, Executable, Deletable) nor does it have the startup header of an executable
Workbench_(AmigaOS)
Starship thermal protection tiles". January 21, 2026. Archived from the original on January 27, 2026. Retrieved January 26, 2026. "SpaceX launches GPS 3
List of Falcon 9 and Falcon Heavy launches
List_of_Falcon_9_and_Falcon_Heavy_launches
Computer program that modifies other programs to replicate itself and spread
unused areas of executable files. These are called cavity viruses. For example, the CIH virus, or Chernobyl Virus, infects Portable Executable files. Because
Computer_virus
National Space Agency of Pakistan
Management: Plan, manage, and execute the National Space Program, encompassing space science, technology, and applications. Space Infrastructure: Design, develop
SUPARCO
Air and space warfare branch of France's armed forces
French Air and Space Force (FASF, French: Armée de l'air et de l'espace, pronounced [aʁme d(ə) lɛʁ e d(ə) lɛspas], lit. 'Army of Air and Space', AAE) is the
French_Air_and_Space_Force
American politician (born 1974)
9/11 were a hoax. Before running for Congress, Greene supported calls to execute prominent Democratic Party politicians, including Hillary Clinton and Barack
Marjorie_Taylor_Greene
Secure area of a main processor
integrity of applications executing with the TEE, and confidentiality of their assets. In general terms, the TEE offers an execution space that provides a higher
Trusted_execution_environment
Overview article
include anti-malware software (Windows Defender); exploit protection features such as Address Space Layout Randomization, Data Execution Prevention improvements
Security and safety features new to Windows Vista
Security_and_safety_features_new_to_Windows_Vista
Planned American defense system
some additional space capabilities". The Golden Dome concept reflects a vast increase in U.S. missile-defense goals, from limited protection against "rogue
Golden Dome (missile defense system)
Golden_Dome_(missile_defense_system)
copyright in the work. Protection of an "architectural work" extends to "the overall form as well as the arrangement and composition of spaces and elements in
Copyright in architecture in the United States
Copyright_in_architecture_in_the_United_States
2024 American television series
much-deserved career-defining role. He described the show as something Amazon executes successfully, though not always perfectly. The second season has a 95%
Cross_(American_TV_series)
has a fling with Pete's cousin Mia, the go-between he pays for Smurf's protection in jail. Smurf navigates prison politics while telling J how to manage
List of Animal Kingdom episodes
List_of_Animal_Kingdom_episodes
Law enforcement agency
protected species, unregulated hunting and fishing activities, protection of natural spaces, and prevention and extinction of fires. The idea of SEPRONA
Nature Protection Service (Spain)
Nature_Protection_Service_(Spain)
Software interface based on commands formatted as lines of text
commands. External commands run executables found in separate executable files. The command line interpreter searches for executable files with names matching
Command-line_interface
Discrete, discontinuous representation of information
from those used for other data. Executable files contain programs; all other files are also data files. However, executable files may also contain data used
Digital_data
Filename suffix that indicates the file's type
[citation needed] A virus may couple itself with an executable without actually modifying the executable. These viruses, known as companion viruses, attach
Filename_extension
Temporarily interrupting a computer task
interrupting an executing task, with the intention of resuming it at a later time. This preemptive scheduler usually runs in the most privileged protection ring
Preemption_(computing)
Mob attacks against bovine meat industry
Hindu nationalists against non-Hindus (mostly Muslims) in the name of cow protection, which are considered sacred in Hinduism. Cattle slaughter is banned in
Cow vigilante violence in India
Cow_vigilante_violence_in_India
Software that executes source code directly
differs from one that processes CPU-native executable code which requires translating source code before executing it. An interpreter may translate the source
Interpreter_(computing)
File format for executables, object code, shared libraries, and core dumps
that reference pages of data elsewhere in the file—was also used in the executable file format for Accent.[citation needed] The Accent file format was, in
Mach-O
1994 video game
disks. Once installed on a hard drive, either in ECS or AGA version, the executable checks from where the game is launched, and if it detects a launch from
Alien_Breed:_Tower_Assault
Full-body garment
Leather quickly became the preferred material due to its durability and the protection it offered against flying debris such as insect strikes during climb-outs
Flight_suit
64-bit extension of x86 architecture
virtual address space can contain executable code and which cannot. An attempt to execute code from a page tagged "no execute" will result in a memory access
X86-64
Country in West Asia
was formed during the 1989 Iranian constitutional referendum for the protection and support of national interests, the revolution, territorial integrity
Iran
EXECUTABLE SPACE-PROTECTION
EXECUTABLE SPACE-PROTECTION
Girl/Female
Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi, Sanskrit, Tamil, Telugu
Space; Sky
Boy/Male
Tamil
Antareeksh | அஂதரீகà¯à®·
Space
Antareeksh | அஂதரீகà¯à®·
Boy/Male
Tamil
Antariksh | அஂதரிகà¯à®·
Space
Antariksh | அஂதரிகà¯à®·
Boy/Male
Hindu
Space
Surname or Lastname
English and Irish
English and Irish : variant of Stacey.
Boy/Male
Tamil
Antrix | அஂதà¯à®°à¯€à®•à¯à®·
Space
Antrix | அஂதà¯à®°à¯€à®•à¯à®·
Male
English
English surname transferred to forename use, derived from the French personal name Pascal, PACE means "Passover; Easter."
Surname or Lastname
English
English : from a vernacular short form of the Latin personal name Paschalis (see Pascal, Italian Pasquale).nickname for a mild-mannered and peaceable person, from Middle English pace, pece ‘peace’, ‘concord’, ‘amity’ (via Anglo-Norman French from Latin pax, genitive pacis).Italian : from the medieval personal name Pace, used for both men and women, from the word pace ‘peace’ (see 1).
Girl/Female
Tamil
Antariksha | அஂதரிகà¯à®·
Space, Sky
Antariksha | அஂதரிகà¯à®·
Surname or Lastname
English
English : nickname for a frugal person, from Middle English spare ‘sparing’, ‘frugal’.
Girl/Female
Indian, Japanese, Tamil
Space; Star
Girl/Female
Indian, Telugu
Space
Boy/Male
Hindu
Space
Boy/Male
Hindu
Space
Boy/Male
Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi, Telugu
Space; Universe
Boy/Male
Hindu, Indian
Space; Sky
Boy/Male
Bengali, Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi, Sindhi, Telugu
Limitless Space
Girl/Female
Hindu, Indian, Marathi
Space; Sky
Surname or Lastname
English or Scottish
English or Scottish : unexplained.
Boy/Male
Hindu, Indian
Space; Outer Space; Sky
EXECUTABLE SPACE-PROTECTION
EXECUTABLE SPACE-PROTECTION
Girl/Female
Hindu
Goddess Saraswati or one who knows all Vedas, Pious
Male
Dutch
, warrior power, or, army wielder.
Surname or Lastname
English
English : habitational name from any of various places in North Yorkshire, Derbyshire, and Lincolnshire named Ingleby, from Old Norse Englar ‘Englishmen’ + bý ‘farmstead’, ‘settlement’.
Girl/Female
Muslim
Delightful sun-shine
Male
Serbian
(Ратко) Serbian name derived from the Slavic element rad, RATKO means "happy."
Girl/Female
Indian, Telugu
Excellent
Boy/Male
Tamil
Nikunja | நீகà¯à®‚ஜாÂ
Grove of trees
Boy/Male
Teutonic
warrior.
Male
Serbian
(Павле) Serbian form of Greek Pavlos, PAVLE means "small."
Girl/Female
American, Australian, Christian, Gaelic, Hebrew, Irish
The Lord is Gracious
EXECUTABLE SPACE-PROTECTION
EXECUTABLE SPACE-PROTECTION
EXECUTABLE SPACE-PROTECTION
EXECUTABLE SPACE-PROTECTION
EXECUTABLE SPACE-PROTECTION
imp. & p. p.
of Space
n.
To arrange or adjust the spaces in or between; as, to space words, lines, or letters.
adv.
With a quick pace; quick; fast; speedily.
v. t.
Scanty; not abundant or plentiful; as, a spare diet.
v. t.
Held in reserve, to be used in an emergency; as, a spare anchor; a spare bed or room.
a.
Capable of being erected; as, an erectable feather.
a.
Capable of being executed; feasible; as, an executable project.
a.
Sensitive; excitable; timid.
n.
Space.
a.
Deserving to be execrated; accursed; damnable; detestable; abominable; as, an execrable wretch.
n.
Manner of stepping or moving; gait; walk; as, the walk, trot, canter, gallop, and amble are paces of the horse; a swaggering pace; a quick pace.
v. t.
To season with spice, or as with spice; to mix aromatic or pungent substances with; to flavor; to season; as, to spice wine; to spice one's words with wit.
n.
The right of bowling again at a full set of pins, after having knocked all the pins down in less than three bowls. If all the pins are knocked down in one bowl it is a double spare; in two bowls, a single spare.
v. t.
To develop, guide, or control the pace or paces of; to teach the pace; to break in.
v. t.
To measure by steps or paces; as, to pace a piece of ground.
v. t.
To dig with a spade; to pare off the sward of, as land, with a spade.
a.
That may be excused, forgiven, justified, or acquitted of blame; pardonable; as, the man is excusable; an excusable action.
n.
A quantity or portion of extension; distance from one thing to another; an interval between any two or more objects; as, the space between two stars or two hills; the sound was heard for the space of a mile.
n.
One of that suit of cards each of which bears one or more figures resembling a spade.
n.
Figuratively, that which enriches or alters the quality of a thing in a small degree, as spice alters the taste of food; that which gives zest or pungency; a slight flavoring; a relish; hence, a small quantity or admixture; a sprinkling; as, a spice of mischief.