User Account Control (UAC) - a feature that has been criticized in Vista. As long as the system changes slightly, it will pop up a dialog box to seek permission from the user, so it has become one of the most hated features in Vista. Also using UAC to judge a program is sometimes complicated. And Microsoft offers only two options for UAC: turn on UAC or turn off UAC, and many users often choose to shut down because they can't stand the pain of UAC. With the UAC in what kind of change it in Windows7
before the paper is recommended that you read an old article "soft media Original: How to keep your computer safe from the root, not poisoning?". What
UAC is?
UAC (UserAccountControl), the Chinese translation for User Account Control, a new Microsoft technology cited in WindowsVista and Windows7, the main function is to make some affect system security When operating, UAC is automatically triggered and can only be executed after the user confirms. Because most of the malware, Trojans, and ad plug-ins are like when you enter the computer: copy files to a directory such as Windows or ProgramFiles, install drivers, install ActiveX, etc., and these operations will trigger UAC, users can prompt at UAC It is time to prohibit the running of these programs.
can trigger UAC's operations include:
* Modify WindowsUpdate configuration;
* add or delete user accounts;
* change the user's account type;
* change UAC disposed; mounted
* ActiveX;
* install or uninstall a program;
* install the device driver;
* modify settings and parental controls;
* Add or modify registry;
* ProgramFiles be moved or copied to the Windows directory or file;
* access to other users directory
is annoying UAC, Microsoft WindowsVista start since joined the UAC, which has become one of the VISTA people dissatisfied with criticism, because unlike Vista Win7 UAC as can be Level setting (in fact, Windows 7 UAC is also very annoying), the general configuration of the computer at that time is also very low, so people pop up on this move, but also the guy who locks the screen is very disgusted.
Windows7 of UAC in perfect
because UAC is too much trouble, so Microsoft in Windows7, joined the UAC level set function, corresponding to the four levels:
the highest level:
at senior level, "always notify" (ie, fully open), at that level, the user installs the application, the software upgrade, the application of the operating system under any circumstances Changes, changes to Windows settings, etc., will pop up a prompt window (and enable the secure desktop), requesting user confirmation. This shows that this level is the safest level, but it is also the most "troublesome" level. It is suitable for multiple users sharing a single computer, restricting other standard users, and prohibiting them from changing system settings at will.
default level:
default level, only if the application will prompt the user when trying to change computer settings, and user take the initiative to make changes to Windows settings you will not be prompted. At the same time, the secure desktop will be enabled in this mode to prevent system settings from being bypassed by UAC. It can be seen that the default level can not interfere with the normal operation of the user, and can effectively prevent the malicious program from modifying the system settings without the user's knowledge. This level setting can be used by normal users.
slightly lower level than the default level:
slightly different from the default level is the level will not enable the secure desktop, which means that there is likely to bypass the UAC circumstances change system settings . However, in general, if you want to start some programs and you need to modify the system, you can run it directly without any security problems. However, if the user does not run any program but pops up a prompt window, it may be that the malicious program is trying to modify the system settings, and you should decisively choose to block. This level is for users with a certain system experience.
lowest level:
lowest level
is turned off UAC function (must take effect after restarting). At this level, if you are logged in as an administrator, all operations will run directly without any notification, including modifications made to the system by viruses or Trojans. At this level, viruses or Trojans can connect to other computers on the network or even communicate with computers on the Internet. It can be seen that if UAC is completely turned off and logged in as an administrator, system security will be seriously degraded. In addition, if you log in as a standard user, installing, upgrading, or modifying and setting up the system will be rejected directly without popping up any prompts. Users can only do so with administrator privileges. It can be seen that UAC is completely turned off and logged in as a standard user. Various operations and settings are also very inconvenient, so it is recommended not to select this level.