How to add or remove your username in Start Menu

Add or remove your username in Start Menu.

By default , windows shows your username at the top of start menu.If you want to remove this , you can just follow these steps:

>>Go to Start>Run . Type regedit to open registry editor

>>Now navigate to the following key : HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer

>>If you can see a Dword value named NoUserNameInStartMenuthen double click that key and change its value to 1 if you want to see remove username in Start Menu

>>Change its value to 0 if you want to see username in StartMenu

*If you cant see the above Dword value. Create a new dword value  by right clicking on the right window pane and rename it to NoUserNameInStartMenu

How to Jailbreak iOS 9

   How to Jailbreak iOS 9.

Jailbreaking is a common thing among iOS users. Now that iOS 9 has been released, it is unsurprising that there is already a jailbreak available. You can follow this guide to jailbreak your iPhone, iPad or iPod.

You must be running iOS 9, 9.0.1, or 9.0.2, and must have a Windows PC (or be running Windows on your Mac) to run the Pangu jailbreak utility. Because the jailbreak has only recently come out, you should remember that there are bugs that will come along with it. You can jailbreak your device by following these steps:

Step 1: Plug your iDevice into your computer, open iTunes and make a backup of your device. Make sure your backup is unencrypted or else you will run into an error later on.

Step 2: Go to Settings – iCloud, and disable Find My iPhone.

Step 3: Go to Settings – Passcode and Touch ID, and disable your Passcode and Touch ID.

Step 4: Turn off WiFi and enable Airplane mode.

Step 5: On your computer, go to www.Pangu.io and press download to download the Pangu jailbreak tool.

Step 6: Navigate to where you downloaded the program, right click the icon and press “Run as Administrator”, and agree to the prompt.

Step 7: Once Pangu recognizes your device, press Start then Already Backup.

Step 8: Let the tool do its thing, once your device reboots, unlock it and put it in airplane mode again.

Step 9: Once it appears, click the Pangu app on your phone, and when it asks you, allow access to your photos. The jailbreak takes advantage of an exploit in the photos.

Step 10: When your device reboots again, turn off Airplane Mode and make sure WiFi is turned on. Open the Cydia app, and let it do its thing.

And there you go, you now have a jailbroken iOS device! Remember that if you ever want to un-jailbreak your device for whatever reason, just restore with iTunes. Since it’s still early on, most jailbreak tweaks probably haven’t been updated for iOS 9 support. Comment below what your favorite jailbreak tweak is!

What is Denial of Service (DoS) Attack?

What is Denial of Service (DoS) Attack?

Denial of service attack or DoS attack is one of the most common and popular way to exploit and cripple the target (victim) machine. These attacks isolates the victim from its resources like web sites and services by crashing the servers or slowing them down. The DoS attack can be initiated by flooding target machine with so many request at the same time that makes victim’s server crash or unable to respond.

Let’s take an example, suppose you are involved in a group discussion and you have a very important point to share. There’s an another guy John, who doesn’t want you to speak out anyway, so what he can do is engage you with his useless questions and you will continuously answer or argue with him without giving any thought, this will isolate you from rest of the group and other guys won’t be able to communicate with you to conclude the discussion. In above scenario you were the victim and John was the attacker. This scenario is quite similar to the DoS attack.

Simple DoS

However a simple DoS attacks can be easily prevented by identifying the source of the requestsby its IP and blocking or blacklisting it. By doing this, server (victim) can now identify these blacklisted IPs and can ignore any request generated from it.

DoS attacks can also be carried out by injecting packets and disturbing protocol handlers. Some examples of DoS attacks are

1. Ping of death: Pinging victim with ridiculously large packets (>65,535 bytes).
2. Teardrop attack: Fragmented overlapping packets.
3. LAND attack: LAND stands for Local Area Network Denial, it uses spoofed packets (TCP SYN with senders IP = victim’s IP) to lock the network.
4. Others: WinNuke / Out-of-band.

This remedy gave birth to a very smart and new kind of DoS attack which is known as DistributedDenial of Service of DDoS attacks which is explained below.

Distributed Denial of Service Attack (DDoS)

In DDoS attacks, attacker needs a amplifying network through which attacker can distributespoofed requests over the network, this makes it impossible for victim to identify the origin of attack because the packets/requests are originating from different source within the network , hence blocking or blacklisting particular IP won’t be able to stop the attack.

Typical DDoS attack

Attacker sends control packets to Masters over distributed network and these Masters send similar control packets to zombies /agents which converts this packets into attack packets and sends all the way into the victim server, here masters and zombies/agents are compromised computers running attacker’s code.

The amplifying network mentioned above amplifies the rate and size of packets.

Difference between DoS and DDoS

Let’s consider a rather simple example, suppose you took a vow to take revenge from John (from previous example) who has some webpage hosted over the network. At first you opened victim’s (John’s) web page and start pressing F5 (refresh) continuously by which lots of request is fired to victim’s server making it slow and non-responsive. John however saw this attack (spoofed traffic) and immediately blocked attacker’s (yours) IP address and started ignoring all further request/packets from you.

This was DoS attack and its prevention, but as you also knew the working of DDoS, you called all of your friends and told them to keep refreshing victim’s (John’s) web page. Now John is having hard time to determine which request is spoofed and which is natural, due to which it became impossible for victim to avoid it. This is how simple DDoS attacks are implemented.

Motives of DoS/DDoS attacks

1. Extortion by threatening victim to launch DoS attack.
2. For exploiting or training – Some tech junkies perform these attacks because they can, there’s no solid motive or goal behind it. Majority of these attackers are youth mischief who has desire to feel the power to “rule the world”.
3. Cyber warfare – To avoid information exchange.
4. Revenge- To take revenge from particular organization. Attackers might attack over little disagreement

How to create Windows 10 apps without code: Build your own Windows app with App Studio.

Windows 10 may well have the most comprehensive software library of any platform in the world, but a trip to the new Windows Store can leave you with a very different picture. Even with the recent addition of Universal Apps that run on the desktop and mobile, developers still seem shy of writing dedicated apps for the Store. Well, now you can do it yourself, for free, and you don’t even need to know anything about coding. In this feature we’ll show you how, using the Windows App Studio.

Can I really create my own app without coding?

Yes, you most certainly can. Let’s be realistic though, this isn’t going to be a super complex, whizz-bang app that sets the world alight - those usually do require a bit more knowledge. However, that doesn’t mean it’s not worth doing. After all, if you can’t find something that pulls together information about your favourite band, sports team, or even your own content, then why not have a go at building it yourself?

How to use the Windows App Studio

The Windows App Studio is a web-based system that doesn’t require the installation of any software on your machine. The online nature also means that you can access your app from any PC with an internet connection. Head over to the Windows App Studio site, and after you’ve logged in with your Microsoft account you’ll be able to make use of the free tools and get started straight away.

Getting started

The first page you’ll see after you’ve logged in is entitled Start New, and has options at the top for creating apps specifically for Windows 10 and Windows 8.1. Obviously you’ll want to make sure the Windows 10 one is selected.

The main pane has options for the different types of template that you can use to build the app. There are two types available : App or Content. The first is used to create web-apps, which are essentially a redirect to an existing webpage or site. Alternatively, Content apps are actual mobile apps, that draw data from various sources and display it in a manner that you specify.

Within Content there are two three options to choose between: Empty App, My Favourite Band, and My App. Empty is just as it says, a completely blank shell into which you add sections and sources, then determine the general look and feel of the app. If this sounds a little too much like hard work then the two others are Predefined templates that still give you control over the content, but use previously generated apps as a starting point. Select one of these to begin.

Using the Editing Menu

Once you begin you’ll be asked to name your app, and then you’ll be taken to the editing menu. This is the main engine house of the App Studio. On the right is a preview of the app as it will appear on a mobile device, to see a desktop version just click on the full screen option below the panel. Any change you make to the app won’t automatically appear in the preview, instead you’ll need to click the Refresh button for them to be presented.

The bulk of the screen is taken up by the blue boxes that represent the content that will appear in your app. Each one can be edited by clicking on the Pen icon in the bottom left corner of each box. To add a new section double-click on the relevant grey box below, then add the required information to connect it to the source of your data. For example you can add a Podcast or Blog feed by selecting the RSS box then entering the URL and clicking Confirm.

Some of the details can look a little scary at first, as adding a Facebook or Twitter feed both require Creating a new API. Thankfully this isn’t as complicated as it sounds, and clicking on the How to Create section that appears next to the request for an API brings up detailed and understandable instructions.

For the most part Microsoft has done a good job of making the process as easy as possible, but the very nature of creating an app means that you’ll need to read the instructions to really understand what’s going on. On the Editing Menu you’ll see a list of options across the top of the page - My Project, How To, Start New, etc. - and it’s definitely worth clicking on How To, as it takes you step by step through the whole process.

Finishing up

Once you’re happy with the app, and have checked to see that each section works in the way you intended, all that’s left to do is click the Finish button on the Editing Menu. This takes you to the Generation page where you can decide on how you want to download the app.

There are three choices; Installable Package, which allows you to directly install the app on any Windows device; Publish Package, that gives you everything you need to submit it to the Windows Store; and Source Code package, for the more code-savvy users that want to edit the app in Visual Studio.

That’s it. Your Windows app is now complete and you are an app developer. Well done!

How to use Google Offline Maps: Navigate without an internet connection.

How to use Google Offline Maps: Downloading a map

The way that the Offline feature works is by downloading the actual map for a locale directly onto your smartphone. Obviously you’ll want to do this before you set off, as a large map could eat into your data plan and of course the reason you’re downloading it is that you might not have a signal where you’re going. Google has limited the size of the map you can install on your device, but as this currently stands at 120,000 square kilometres, so you should be good for most trips.

To download a map you’ll first need to open the Maps app on your smartphone or tablet, then search for the area, city, desolate wasteland that you intend to visit. When you find the place you’ll see its name in a white area at the bottom of the screen. Tap on this and the area will slide up, revealing more details about the locality. To save it to your device simply tap the three dots in the top right corner of the screen and you’ll see the option Download offline area appear if you’re using an Android phone or Save Offline map for iOS users. Tap this, confirm your selection, and the map will be installed on your handset.

How to use Google Offline Maps: navigation

As Android is a Google product, the advanced offline features have been implemented on this platform first, with no doubt similar to follow on iOS. To get started open up the Maps app and tap on the blue circle in the bottom right corner. This brings up the search option where you can enter your start and finish points. At the moment the offline mode will only allow you to have driving navigation, so walking or public transport are out, and as you might have already worked out there will be no traffic information available either. Once you’ve entered the route details tap the blue circle with the arrow in it and you’ll now be able to drive to your destination without the need of an internet connection.

iOS users are currently limited to viewing only, as navigation and route calculations are still to be introduced. To find the locally stored maps on your iOS device tap the three lines menu option again and then tap Your places and scroll down to offline maps. Now you can use the information in much the same way as a paper map, albeit without the need to unfold it out to something resembling a blanket. Keep an eye out for updates to Maps on iOS, as the navigation feature will surely arrive pretty soon.

How to set up a new Android phone or tablet.

How to set up a new Android phone or tablet

Step One

Put your SIM-card into your new device if it's a smartphone or a tablet with mobile data connectivity.

Step Two

Switch on your new Android device using the power button which is normally located on the top or side. Remember that it might need charging before it will switch on.

Step Three

The first thing you'll need to do once the device is powered up is select a language. Select from the list which you would like to use.

Step Four

You'll want to connect to a Wi-Fi network to get things set up properly but if you can't then you can skip this step. However, you won't be able to do much without it.

Step Five 

With an active Wi-Fi connection, sign into your Google account with your usual email address and password. If you don't have a Google account then you can create one now.

Some devices will ask you if you want to sign into other services and networks like Facebook, Twitter and Dropbox. You can do this now or later when you open the apps.

Step Six

Next you'll be given a set of options relating to Google services such as backup and location. Untick any boxes you wish and carry on.

You can adjust backup and location preferences later so don't worry too much now.

Step Seven

Since we're using a Nexus device, the next step asks whether you want to use Google Now which provides helpful information such as news, weather, sports scores and travel data. Other devices such as those from Samsung or Sony might prompt you to sign up for different accounts.

Step Eight

That should conclude the set up process but as we mentioned earlier, different devices will have different steps. You are likely to be welcomed to your new device and might be shown a brief tutorial on how to do things like customise the wallpaper, widgets and settings.