How to get sudo to prompt you for a password each time in linux


Open Terminal and type:
sudo visudo
Then scroll down to the line that reads:
Defaults        env_reset
And change it to:
Defaults        env_reset,timestamp_timeout=0
You can change 0 to any values (time in minutes). Setting it to 0 will ask for your password every time and -1 will make it never ask. The default is 15 according to man sudo 8, but some manuals say the default is 5. Have a look at the RootSudoTimeout wiki for more information.
Press CTRL + X to finish editing, Y to save changes, and ENTER to exit.
Linux
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How to change disk checking (fsck) frequency at boot?


Ubuntu checks the root partition at about every 30th boot. If you have a desktop machine/laptop that you switch off every day, this number may be too small. In this case you can safely increase this number to 50 at least.
First, figure out where your root partition is using the df command which produces this result in my case:
Filesystem           1K-blocks      Used Available Use% Mounted on
/dev/sda6             30850168   9374588  19908444  33% /
/dev/sda8            129636480  52663092  76973388  41% /media/DATA
So my root partition (‘/‘) is at /dev/sda6.
Then check out your disk checking frequency:
sudo dumpe2fs /dev/sda6 | grep -i "mount count"
Where you need to replace /dev/sda6 with the value that is specific to your root partition. Its output is something like this:
dumpe2fs 1.42.13 (17-May-2015)
Mount count:              12
Maximum mount count:      26
Finally, if I want to increase the frequency to 50:
sudo tune2fs -c 50 /dev/sda6
To disable file system integrity check for forever. Type following command 
sudo tune2fs -c -1 /dev/sda6
To check after 1 month. Type following command 
sudo tune2fs -i 1m /dev/sda6
List  the  contents  of the filesystem superblock, including the current values of the parameters that can be set via  this  pro‐gram.
sudo tune2fs -l /dev/sda6
Where, again, you might need to replace /dev/sda6.
Linux
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How To Stop Wi-Fi Stealing And Catch That Person


backdoor-Netis-Netcore-Router
Often we are unable to locate an uninvited user who uses our Wi-Fi. If someone uses our Wi-Fi without our knowledge, that would be termed as Wi-Fi stealing.Whatever be the case, to be on the safer side, we must know who is using my Wi-Fi without my permission and how can we stop them. So, here are the steps

Login to your router

Different routers support different login styles. So, I am listing a few of the logging in style, out of these, one might work for you:
  • 1. Punch in the IP address of your router in your browser address bar directly like 192.168.0.1 or 192.168.1.1
  • 2. If the above address does not work, you can also try routerlogin.com and it will redirect to your router admin panel.
  • 3. Enter the administrator username and password.
  • 4. nce you are inside the admin panel, look for menu options like ‘Connected devices’ or ‘Attached devices’.
  • 5. If you are able to find that menu, you can see the MAC Address, IP Address and Device name of all the devices which are connected to your network. This is how my Attached devices looks like.
  • 6. If you see some extra person’s name or some extra device then they are the one who might be using your Wi-Fi without your permission. Read on to know the steps to stop Wi-Fi stealing.

Mac Filtering

How to stop someone from Wi-Fi stealing?

Once you come to a conclusion that someone else is making use of your Wi-Fi resources, you can simply change the password of your Wi-Fi to a stronger password. You can also switch off your SSID broadcast.
If you want a stricter action, you can set up a filter based on the MAC address of the devices.
Network
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How To Hack WiFi Using Wps Wpa tester...?


Want to take advantage of your neighbor’s super fast Wi-Fi connection? If they’re smart, they probably have it password protected (otherwise you wouldn’t be reading this, would you?). But if you have an Android phone, you can get back at them for always parking in your spot and slamming the door when they get home at 2 a.m.—by stealing…er, borrowing, their connection.

So Today i am posting how to hack Wi-Fi password in less than 1 min with App Name WiFi Wps Wpa tester .

Requirements:

  •    1. Rooted Android Device (4.0+ recommend).

    • Root Checker

    About Root
  •    2. Wpa Wps Tester Premium 2.3.7 Cracked APK or later.
  •    3. Busybox Installed.
  •    4. Terminal Emulator installed. (no needed ).
  •    5. Recommended to use on high signal -60 or less.

HACK WiFi using WiFi Wps Wpa tester:

  •    1. Just download and Install Wpa Wps Tester Premium.
  •    2. Make Sure You Have Enabled The Unknown Sources In Settings/
  •    3. Open app and press refresh.
  •    4. Then the list of Wi-Fi networks available will be shown.

    • Scanned Wifi
  •    5. If you see a green Lock Icon click on it

    Click on Connect Automatic Pin
  •    6. Press Connect Automatic Pin

    • Trying To Connect Wifi
  •    7. Copy the password and connect free hack Wi-Fi connection.
Android , Network
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How to Unlock Android Phone Pattern Lock


The pattern lock tool that is built-in Android smart-phones is very useful in adding extra security to such devices. But when you by chance forgot the security pattern and can’t unlock the device, it can be very frustrating. Having such security measures is very important in protecting sensitive data in android devices.

Forgotten Security Pattern

Though this security tool is fairly easy to use, several wrong attempts may lock the device permanently. This is certainly a big problem, especially if you rely on your device in getting through your life’s busy schedule. Fortunately, if ever you forget the needed security pattern there is a way to reset and unlock your android device’s lock pattern as long as you can access your Gmail account.

Unlocking Pattern Without Google Account

How to Unlock Android Phone Pattern Lock
Knowing how to properly reset and unlock your android device’s lock pattern is essential in assuring continuous use. If ever you did use up your allowed chances in unlocking the device, and really forgotten the lock pattern, just simply follow these steps:
How to Unlock Android Phone Pattern Lock
    1. The first step is to turn off your android device, and wait for a couple of seconds before proceeding to the next step. 
    2. The next step is to press and hold the Home Key, Volume up, and the Power Button buttons together and wait until the device boots up. If in case your device does not have any home button, hold the power key and volume up key together. 
    3. A DOS like screen will appear with different options and by using the volume key in order to select up and down, depending on your device’s settings, scroll down and select “Delete all User Data” or “Restore Factory Defaults”
    4. After selecting the above settings, scroll down and select “Reboot System Now”, this will reboot the device and will allow you to set a new security pattern.
Unlocking Pattern with Google Account

How to Unlock Android Phone Pattern Lock
If you don’t want to do a device reboot and you already tried different patterns and still can’t unlock your device, usually five attempts, the following steps will guide you how to access your locked device:
    1. After several attempts a message will pop-up which will allow you to choose from two buttons, either “next” or “try again”. Select the “next” button and two ways in unlocking the device will be shown (“security question” and “provide Google account details”).
    2. If you were able to set your security question in your Google account, select this option and simply provide the correct answer and unlock the device quickly.
    3. If you didn’t set a security question, or forgotten the correct answer also, select the Google account button and then click “next”. After providing the Google account details (username and password) that are attached to the device, select “sign in”.
    4. You will be then directed to reset and choose a new security pattern and unlock the device with it.
Android
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