vb.net free barcode component Architectural and Internal Security Improvements in Windows Vista and Windows 7 in Visual C#

Creating DataMatrix in Visual C# Architectural and Internal Security Improvements in Windows Vista and Windows 7

TABlE 2-2 Architectural and Internal Security Improvements in Windows Vista and Windows 7
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Code Integrity Windows Resource Protection Kernel Patch Protection Required Driver Signing
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Detects malicious modifications to kernel files at startup . Prevents potentially dangerous changes to system resources . Blocks potentially malicious changes that might compromise the integrity of the kernel on 64-bit systems . Requires drivers to be signed, which improves reliability and makes it more difficult to add malicious drivers . Mandatory on 64-bit systems . Allows system services to access only those resources they normally need to access, reducing the impact of a compromised service . When used together with Windows Server 2008, helps to protect your network from clients who do not meet your security requirements . Reduces risks associated with remote management by supporting encryption and authentication .
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Crypto Next Generation services Data Execution Prevention Address Space Layout Randomization New Logon Architecture Rights Management Services client Multiple Local Group Policy Objects
Allows the addition of custom cryptographic algorithms to meet government requirements . Reduces the risk of buffer overflow attacks by marking data sections of memory as nonexecutable . Reduces the risk of buffer overflow attacks by assigning executable code to random memory locations . Simplifies development of custom logon mechanisms . Provides support for opening Rights Management Services protected documents when the proper applications are installed and the necessary infrastructure is in place . Allows administrators to apply multiple Local Group Policy Objects to a single computer, simplifying security configuration management for workgroup computers .
The sections that follow describe these features in more detail .
Code Integrity
When Windows starts up, Code Integrity (CI) verifies that system files haven t been maliciously modified and ensures that there are no unsigned drivers running in Kernel Mode . The bootloader checks the integrity of the kernel, the Hardware Abstraction Layer (HAL), and the boot-start drivers . After those files are verified, CI verifies the digital signatures of any binaries that are loaded into the kernel s memory space . Additionally, CI verifies binaries loaded into protected processes and the cryptography dynamic-link libraries (DLLs) . CI works automatically and does not require management .
note
CI is an example of a detective countermeasure because it can identify that the
computer was compromised after the fact. although it is always preferable to prevent attacks, detective countermeasures such as CI enable you to limit the damage caused by the attack by detecting the compromise so that you can repair the computer. You should also have a response plan in place to enable you to quickly repair a system that has had critical files compromised.
Windows Resource protection
Any code that runs in Kernel Mode, including many types of drivers, can potentially corrupt kernel data in ways that surface later . Diagnosing and fixing these bugs can be difficult and time consuming . Corruption of the registry tends to have a disproportionate impact on overall reliability because this corruption can persist across reboots .
Security Features Previously Introduced in Windows Vista
CHapTER 2
Windows Vista and Windows 7 protect system settings from corruption or inadvertent changes that can cause the system to run incorrectly or to not run at all . Windows Resource Protection (WRP), the follow-up to the Windows File Protection (WFP) feature found in previous Windows platforms, sets tight ACLs on critical system settings, files, and folders to protect them from changes by any source (including administrators) except a trusted installer . This prevents users from accidentally changing critical system settings that can render systems inoperable . Windows Vista and Windows 7 also prevent poorly written drivers from corrupting the registry . This protection enables the memory-management feature to achieve protection the vast majority of the time, with low overhead . Protected resources include:
n n n
Executable files, libraries, and other critical files installed by Windows . Critical folders . Essential registry keys installed by Windows .
WRP does not allow you to modify protected resources, even if you provide administrative credentials .
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