VIRUS :
Viruses are malicious software programs that have been designed by other computer users to cause destruction and havoc on a computer and spread themselves to other computers where they can repeat the process.
A virus is an independent program which reproduces itself. It may attach to other programs, it may create copies of itself. It may damage or corrupt data, change data, or degrade the performance of your system by utilizing resources such as memory or disk space.
WORM:
Worms are programs which reproduce by copying themselves over and over, system to system, using up all resources and thus sometimes slowing the systems. They are self contained and use the networks to spread, they are very much similar to viruses(use files to spread).
THROJAN HORSE :
A program or utility that falsely appears to be a useful program or utility, such as a screen saver. However, once installed, it performs a function in the background such as allowing other users to have access to your computer or sending information from your computer to other computers.
LOGIC BOMB :
Code which will trigger a particular form of 'attack' when a designated condition is met. For instance, a logic bomb could delete all files on Dec. 5th. Unlike a virus, a logic bomb does not make copies of itself.
It is unintentional, It can be an error in the logic of a program that results in the destruction of the data. It can be the result of a simple corrupt file.
Monday, March 23, 2009
Friday, March 6, 2009
Ways to secure folder
These are some useful tricks to hide / Secure your folder from unauthorised access
Control Panel {21EC2020-3AEA-1069-A2DD-08002B30309D}
Lock {21F3D32E-CEEB-4345-87B3-336E54D39A9C}
{21F5A790-53EA-3D73-86C3-A5BA6CF65FE9}
{2206CDB0-19C1-11D1-89E0-00C04FD7A829}
Network {208D2C60-3AEA-1069-A2D7-08002B30309D}
My Computer {20D04FE0-3AEA-1069-A2D8-08002B30309D}
Recycle bin {645FF040-5081-101B-9F08-00AA002F954E}
Network Connection {7007ACC7-3202-11D1-AAD2-00805FC1270E}
Search {E17D4FC0-5564-11D1-83F2-00A0C90DC849}
Zipped Folder {E88DCCE0-B7B3-11D1-A9F0-00AA0060FA31}
e.g Suppose your folder name is "trial" then rename it as "trial.{21EC2020-3AEA-1069-A2DD-08002B30309D}" (Without the quotes) and press Enter. Now you will find that whenever you try to open this folder Control Panel will be opend instead.
Try for other extention, it will produce different result.
for any further information anyone can contact me at prashant.dhamde@gmail.com
Please write subject line as PCISSUES.
Thank You . . .
- Folder can be prevented from unauthorised access by hiding in such a way that it will not be visible even when you enable SHOW HIDDEN FOLDER option.To do this, Follow following steps:
- Right click on a folder and rename (or simply select folder and press F2) Now hold ALTER key and press 0160 from NUMBER PAD and then relese ALTER key and press Enter. Now U will see your folder has no name(Actually it is renamed as SPACE)
- Now Second task is to hide the icon(i.e to make it transparent)
- For this RIght click on the folder, select properties, Now under customize tab click change icon button and select 13th icon in second row from the list(And make sure that u are looking inside "%SystemRoot%\system32\SHELL32.dll" file) and apply this icon and its done!!!!!
- The second way of preventing folder is to lock it.
Control Panel {21EC2020-3AEA-1069-A2DD-08002B30309D}
Lock {21F3D32E-CEEB-4345-87B3-336E54D39A9C}
{21F5A790-53EA-3D73-86C3-A5BA6CF65FE9}
{2206CDB0-19C1-11D1-89E0-00C04FD7A829}
Network {208D2C60-3AEA-1069-A2D7-08002B30309D}
My Computer {20D04FE0-3AEA-1069-A2D8-08002B30309D}
Recycle bin {645FF040-5081-101B-9F08-00AA002F954E}
Network Connection {7007ACC7-3202-11D1-AAD2-00805FC1270E}
Search {E17D4FC0-5564-11D1-83F2-00A0C90DC849}
Zipped Folder {E88DCCE0-B7B3-11D1-A9F0-00AA0060FA31}
e.g Suppose your folder name is "trial" then rename it as "trial.{21EC2020-3AEA-1069-A2DD-08002B30309D}" (Without the quotes) and press Enter. Now you will find that whenever you try to open this folder Control Panel will be opend instead.
Try for other extention, it will produce different result.
for any further information anyone can contact me at prashant.dhamde@gmail.com
Please write subject line as PCISSUES.
Thank You . . .
Wednesday, March 4, 2009
Speeding UP PC
Following are the guidelines for boosting the PC Speed.
1. Defragmentation
Defragment disk drive atleast once in 3 months.
2. Upgrade RAM 512
If possible upgrade your RAM to 512MB.
3. NTFS
Always use NTFS partition as it is more secure and supports larger disk size.
4. Empty Prefetch Folder
Delete the contents of prefetch folder once a week. This folder doesn't contain any critical data so One can delete the content anytime.
5. Disk CleanUp
Run disk cleanup once a month.
6. Spyware
Make your PC virus and Spyware Free
7. StartUp
Remove unwanted entries from system startup.
for doing this run->msconfig
and then from statup tab uncheck unwanted entry and then restart the system for changes to take affect.
8. Remove Unnecessary Programs
Uninstall unwanted software from the system.
9. Clean Registry
Alwase have the habit of cleaning the registry, don't try to manually delete any entry from registry as this can be dangerous for health of your PC. Use "Registry Cleaner" software instead.
10. Services
Disable unnecessary services.
1. Defragmentation
Defragment disk drive atleast once in 3 months.
2. Upgrade RAM 512
If possible upgrade your RAM to 512MB.
3. NTFS
Always use NTFS partition as it is more secure and supports larger disk size.
4. Empty Prefetch Folder
Delete the contents of prefetch folder once a week. This folder doesn't contain any critical data so One can delete the content anytime.
5. Disk CleanUp
Run disk cleanup once a month.
6. Spyware
Make your PC virus and Spyware Free
7. StartUp
Remove unwanted entries from system startup.
for doing this run->msconfig
and then from statup tab uncheck unwanted entry and then restart the system for changes to take affect.
8. Remove Unnecessary Programs
Uninstall unwanted software from the system.
9. Clean Registry
Alwase have the habit of cleaning the registry, don't try to manually delete any entry from registry as this can be dangerous for health of your PC. Use "Registry Cleaner" software instead.
10. Services
Disable unnecessary services.
Achiving Secure Computing
Follow following guidelines for achieving secure computing
1. Check Windows Update and Office Update regularly
2. Install a personal firewall.
3. Install a spyware blocker.
4. Block pop-up spam messages
5. Use strong passwords and change them periodically
6. Buy antivirus software and keep it up to date.
7. Don’t open an email from unknown person(Atleast avoid download attachment)
1. Check Windows Update and Office Update regularly
2. Install a personal firewall.
3. Install a spyware blocker.
4. Block pop-up spam messages
5. Use strong passwords and change them periodically
6. Buy antivirus software and keep it up to date.
7. Don’t open an email from unknown person(Atleast avoid download attachment)
Windows ShortCut Keys
Windows key + R = Run menu
This is usually followed by:
cmd = Command Prompt
iexplore + "web address" = Internet Explorer
compmgmt.msc = Computer Management
dhcpmgmt.msc = DHCP Management
dnsmgmt.msc = DNS Management
services.msc = Services
eventvwr = Event Viewer
dsa.msc = Active Directory Users and Computers
dssite.msc = Active Directory Sites and Services
Windows key + E = Explorer
ALT + Tab = Switch between windows
ALT, Space, X = Maximize window
CTRL + Shift + Esc = Task Manager
Windows key + Break = System properties
Windows key + F = Search
Windows key + D = Hide/Display all windows
CTRL + C = copy
CTRL + X = cut
CTRL + V = paste
Also don't forget about the "Right-click" key next to the right Windows key on your keyboard. Using the arrows and that key can get just about anything done once you've opened up any program.
Keyboard Shortcuts
[Alt] and [Esc] Switch between running applications
[Alt] and letter Select menu item by underlined letter
[Ctrl] and [Esc] Open Program Menu
[Ctrl] and [F4] Close active document or group windows (does not work with some applications)
[Alt] and [F4] Quit active application or close current window
[Alt] and [-] Open Control menu for active document
Ctrl] Lft., Rt. arrow Move cursor forward or back one word
Ctrl] Up, Down arrow Move cursor forward or back one paragraph
[F1] Open Help for active application
Windows+M Minimize all open windows
Shift+Windows+M Undo minimize all open windows
Windows+F1 Open Windows Help
Windows+Tab Cycle through the Taskbar buttons
Windows+Break Open the System Properties dialog box
acessability shortcuts
Right SHIFT for eight seconds........ Switch FilterKeys on and off.
Left ALT +left SHIFT +PRINT SCREEN....... Switch High Contrast on and off.
Left ALT +left SHIFT +NUM LOCK....... Switch MouseKeys on and off.
SHIFT....... five times Switch StickyKeys on and off.
NUM LOCK...... for five seconds Switch ToggleKeys on and off.
explorer shortcuts
END....... Display the bottom of the active window.
HOME....... Display the top of the active window.
NUM LOCK+ASTERISK....... on numeric keypad (*) Display all subfolders under the selected folder.
NUM LOCK+PLUS SIGN....... on numeric keypad (+) Display the contents of the selected folder.
NUM LOCK+MINUS SIGN....... on numeric keypad (-) Collapse the selected folder.
LEFT ARROW...... Collapse current selection if it's expanded, or select parent folder.
RIGHT ARROW....... Display current selection if it's collapsed, or select first subfolder.
Type the following commands in your Run Box (Windows Key + R) or Start Run
devmgmt.msc = Device Manager
msinfo32 = System Information
cleanmgr = Disk Cleanup
ntbackup = Backup or Restore Wizard (Windows Backup Utility)
mmc = Microsoft Management Console
excel = Microsoft Excel (If Installed)
msaccess = Microsoft Access (If Installed)
powerpnt = Microsoft PowerPoint (If Installed)
winword = Microsoft Word (If Installed)
frontpg = Microsoft FrontPage (If Installed)
notepad = Notepad
wordpad = WordPad
calc = Calculator
msmsgs = Windows Messenger
mspaint = Microsoft Paint
wmplayer = Windows Media Player
rstrui = System Restore
netscp6 = Netscape 6.x
netscp = Netscape 7.x
netscape = Netscape 4.x
waol = America Online
control = Opens the Control Panel
control printers = Opens the Printers Dialog
internetbrowser
type in u're adress "google", then press [Right CTRL] and [Enter]
add www. and .com to word and go to it
For Windows XP:
Copy. CTRL+C
Cut. CTRL+X
Paste. CTRL+V
Undo. CTRL+Z
Delete. DELETE
Delete selected item permanently without placing the item in the Recycle Bin. SHIFT+DELETE
Copy selected item. CTRL while dragging an item
Create shortcut to selected item. CTRL+SHIFT while dragging an item
Rename selected item. F2
Move the insertion point to the beginning of the next word. CTRL+RIGHT ARROW
Move the insertion point to the beginning of the previous word. CTRL+LEFT ARROW
Move the insertion point to the beginning of the next paragraph. CTRL+DOWN ARROW
Move the insertion point to the beginning of the previous paragraph. CTRL+UP ARROW
Highlight a block of text. CTRL+SHIFT with any of the arrow keys
Select more than one item in a window or on the desktop, or select text within a document. SHIFT with any of the arrow keys
Select all. CTRL+A
Search for a file or folder. F3
View properties for the selected item. ALT+ENTER
Close the active item, or quit the active program. ALT+F4
Opens the shortcut menu for the active window. ALT+SPACEBAR
Close the active document in programs that allow you to have multiple documents open simultaneously. CTRL+F4
Switch between open items. ALT+TAB
Cycle through items in the order they were opened. ALT+ESC
Cycle through screen elements in a window or on the desktop. F6
Display the Address bar list in My Computer or Windows Explorer. F4
Display the shortcut menu for the selected item. SHIFT+F10
Display the System menu for the active window. ALT+SPACEBAR
Display the Start menu. CTRL+ESC
Display the corresponding menu. ALT+Underlined letter in a menu name
Carry out the corresponding command. Underlined letter in a command name on an open menu
Activate the menu bar in the active program. F10
Open the next menu to the right, or open a submenu. RIGHT ARROW
Open the next menu to the left, or close a submenu. LEFT ARROW
Refresh the active window. F5
View the folder one level up in My Computer or Windows Explorer. BACKSPACE
Cancel the current task. ESC
SHIFT when you insert a CD into the CD-ROM drive Prevent the CD from automatically playing.
Use these keyboard shortcuts for dialog boxes:
To Press
Move forward through tabs. CTRL+TAB
Move backward through tabs. CTRL+SHIFT+TAB
Move forward through options. TAB
Move backward through options. SHIFT+TAB
Carry out the corresponding command or select the corresponding option. ALT+Underlined letter
Carry out the command for the active option or button. ENTER
Select or clear the check box if the active option is a check box. SPACEBAR
Select a button if the active option is a group of option buttons. Arrow keys
Display Help. F1
Display the items in the active list. F4
Open a folder one level up if a folder is selected in the Save As or Open dialog box. BACKSPACE
If you have a Microsoft Natural Keyboard, or any other compatible keyboard that includes the Windows logo key and the Application key , you can use these keyboard shortcuts:
Display or hide the Start menu. WIN Key
Display the System Properties dialog box. WIN Key+BREAK
Show the desktop. WIN Key+D
Minimize all windows. WIN Key+M
Restores minimized windows. WIN Key+Shift+M
Open My Computer. WIN Key+E
Search for a file or folder. WIN Key+F
Search for computers. CTRL+WIN Key+F
Display Windows Help. WIN Key+F1
Lock your computer if you are connected to a network domain, or switch users if you are not connected to a network domain. WIN Key+ L
Open the Run dialog box. WIN Key+R
Open Utility Manager. WIN Key+U
accessibility keyboard shortcuts:
Switch FilterKeys on and off. Right SHIFT for eight seconds
Switch High Contrast on and off. Left ALT+left SHIFT+PRINT SCREEN
Switch MouseKeys on and off. Left ALT +left SHIFT +NUM LOCK
Switch StickyKeys on and off. SHIFT five times
Switch ToggleKeys on and off. NUM LOCK for five seconds
Open Utility Manager. WIN Key+U
shortcuts you can use with Windows Explorer:
Display the bottom of the active window. END
Display the top of the active window. HOME
Display all subfolders under the selected folder. NUM LOCK+ASTERISK on numeric keypad (*)
Display the contents of the selected folder. NUM LOCK+PLUS SIGN on numeric keypad (+)
Collapse the selected folder. NUM LOCK+MINUS SIGN on numeric keypad (-)
Collapse current selection if it's expanded, or select parent folder. LEFT ARROW
Display current selection if it's collapsed, or select first subfolder. RIGHT ARROW
This is usually followed by:
cmd = Command Prompt
iexplore + "web address" = Internet Explorer
compmgmt.msc = Computer Management
dhcpmgmt.msc = DHCP Management
dnsmgmt.msc = DNS Management
services.msc = Services
eventvwr = Event Viewer
dsa.msc = Active Directory Users and Computers
dssite.msc = Active Directory Sites and Services
Windows key + E = Explorer
ALT + Tab = Switch between windows
ALT, Space, X = Maximize window
CTRL + Shift + Esc = Task Manager
Windows key + Break = System properties
Windows key + F = Search
Windows key + D = Hide/Display all windows
CTRL + C = copy
CTRL + X = cut
CTRL + V = paste
Also don't forget about the "Right-click" key next to the right Windows key on your keyboard. Using the arrows and that key can get just about anything done once you've opened up any program.
Keyboard Shortcuts
[Alt] and [Esc] Switch between running applications
[Alt] and letter Select menu item by underlined letter
[Ctrl] and [Esc] Open Program Menu
[Ctrl] and [F4] Close active document or group windows (does not work with some applications)
[Alt] and [F4] Quit active application or close current window
[Alt] and [-] Open Control menu for active document
Ctrl] Lft., Rt. arrow Move cursor forward or back one word
Ctrl] Up, Down arrow Move cursor forward or back one paragraph
[F1] Open Help for active application
Windows+M Minimize all open windows
Shift+Windows+M Undo minimize all open windows
Windows+F1 Open Windows Help
Windows+Tab Cycle through the Taskbar buttons
Windows+Break Open the System Properties dialog box
acessability shortcuts
Right SHIFT for eight seconds........ Switch FilterKeys on and off.
Left ALT +left SHIFT +PRINT SCREEN....... Switch High Contrast on and off.
Left ALT +left SHIFT +NUM LOCK....... Switch MouseKeys on and off.
SHIFT....... five times Switch StickyKeys on and off.
NUM LOCK...... for five seconds Switch ToggleKeys on and off.
explorer shortcuts
END....... Display the bottom of the active window.
HOME....... Display the top of the active window.
NUM LOCK+ASTERISK....... on numeric keypad (*) Display all subfolders under the selected folder.
NUM LOCK+PLUS SIGN....... on numeric keypad (+) Display the contents of the selected folder.
NUM LOCK+MINUS SIGN....... on numeric keypad (-) Collapse the selected folder.
LEFT ARROW...... Collapse current selection if it's expanded, or select parent folder.
RIGHT ARROW....... Display current selection if it's collapsed, or select first subfolder.
Type the following commands in your Run Box (Windows Key + R) or Start Run
devmgmt.msc = Device Manager
msinfo32 = System Information
cleanmgr = Disk Cleanup
ntbackup = Backup or Restore Wizard (Windows Backup Utility)
mmc = Microsoft Management Console
excel = Microsoft Excel (If Installed)
msaccess = Microsoft Access (If Installed)
powerpnt = Microsoft PowerPoint (If Installed)
winword = Microsoft Word (If Installed)
frontpg = Microsoft FrontPage (If Installed)
notepad = Notepad
wordpad = WordPad
calc = Calculator
msmsgs = Windows Messenger
mspaint = Microsoft Paint
wmplayer = Windows Media Player
rstrui = System Restore
netscp6 = Netscape 6.x
netscp = Netscape 7.x
netscape = Netscape 4.x
waol = America Online
control = Opens the Control Panel
control printers = Opens the Printers Dialog
internetbrowser
type in u're adress "google", then press [Right CTRL] and [Enter]
add www. and .com to word and go to it
For Windows XP:
Copy. CTRL+C
Cut. CTRL+X
Paste. CTRL+V
Undo. CTRL+Z
Delete. DELETE
Delete selected item permanently without placing the item in the Recycle Bin. SHIFT+DELETE
Copy selected item. CTRL while dragging an item
Create shortcut to selected item. CTRL+SHIFT while dragging an item
Rename selected item. F2
Move the insertion point to the beginning of the next word. CTRL+RIGHT ARROW
Move the insertion point to the beginning of the previous word. CTRL+LEFT ARROW
Move the insertion point to the beginning of the next paragraph. CTRL+DOWN ARROW
Move the insertion point to the beginning of the previous paragraph. CTRL+UP ARROW
Highlight a block of text. CTRL+SHIFT with any of the arrow keys
Select more than one item in a window or on the desktop, or select text within a document. SHIFT with any of the arrow keys
Select all. CTRL+A
Search for a file or folder. F3
View properties for the selected item. ALT+ENTER
Close the active item, or quit the active program. ALT+F4
Opens the shortcut menu for the active window. ALT+SPACEBAR
Close the active document in programs that allow you to have multiple documents open simultaneously. CTRL+F4
Switch between open items. ALT+TAB
Cycle through items in the order they were opened. ALT+ESC
Cycle through screen elements in a window or on the desktop. F6
Display the Address bar list in My Computer or Windows Explorer. F4
Display the shortcut menu for the selected item. SHIFT+F10
Display the System menu for the active window. ALT+SPACEBAR
Display the Start menu. CTRL+ESC
Display the corresponding menu. ALT+Underlined letter in a menu name
Carry out the corresponding command. Underlined letter in a command name on an open menu
Activate the menu bar in the active program. F10
Open the next menu to the right, or open a submenu. RIGHT ARROW
Open the next menu to the left, or close a submenu. LEFT ARROW
Refresh the active window. F5
View the folder one level up in My Computer or Windows Explorer. BACKSPACE
Cancel the current task. ESC
SHIFT when you insert a CD into the CD-ROM drive Prevent the CD from automatically playing.
Use these keyboard shortcuts for dialog boxes:
To Press
Move forward through tabs. CTRL+TAB
Move backward through tabs. CTRL+SHIFT+TAB
Move forward through options. TAB
Move backward through options. SHIFT+TAB
Carry out the corresponding command or select the corresponding option. ALT+Underlined letter
Carry out the command for the active option or button. ENTER
Select or clear the check box if the active option is a check box. SPACEBAR
Select a button if the active option is a group of option buttons. Arrow keys
Display Help. F1
Display the items in the active list. F4
Open a folder one level up if a folder is selected in the Save As or Open dialog box. BACKSPACE
If you have a Microsoft Natural Keyboard, or any other compatible keyboard that includes the Windows logo key and the Application key , you can use these keyboard shortcuts:
Display or hide the Start menu. WIN Key
Display the System Properties dialog box. WIN Key+BREAK
Show the desktop. WIN Key+D
Minimize all windows. WIN Key+M
Restores minimized windows. WIN Key+Shift+M
Open My Computer. WIN Key+E
Search for a file or folder. WIN Key+F
Search for computers. CTRL+WIN Key+F
Display Windows Help. WIN Key+F1
Lock your computer if you are connected to a network domain, or switch users if you are not connected to a network domain. WIN Key+ L
Open the Run dialog box. WIN Key+R
Open Utility Manager. WIN Key+U
accessibility keyboard shortcuts:
Switch FilterKeys on and off. Right SHIFT for eight seconds
Switch High Contrast on and off. Left ALT+left SHIFT+PRINT SCREEN
Switch MouseKeys on and off. Left ALT +left SHIFT +NUM LOCK
Switch StickyKeys on and off. SHIFT five times
Switch ToggleKeys on and off. NUM LOCK for five seconds
Open Utility Manager. WIN Key+U
shortcuts you can use with Windows Explorer:
Display the bottom of the active window. END
Display the top of the active window. HOME
Display all subfolders under the selected folder. NUM LOCK+ASTERISK on numeric keypad (*)
Display the contents of the selected folder. NUM LOCK+PLUS SIGN on numeric keypad (+)
Collapse the selected folder. NUM LOCK+MINUS SIGN on numeric keypad (-)
Collapse current selection if it's expanded, or select parent folder. LEFT ARROW
Display current selection if it's collapsed, or select first subfolder. RIGHT ARROW
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