Saturday 24 November 2018

What are Chatbots and how does a chatbots work..?? || techtalksgroup ||


A chatbot is an artificial intelligence (AI) software that can simulate a conversation (or a chat) with a user in natural language through messaging applications, websites, mobile apps or through the telephone.

 A chatbot is often described as one of the most advanced and promising expressions of interaction between humans and machines. However, from a technological point of view, a chatbot only represents the natural evolution of a Question Answering system leveraging Natural Language Processing (NLP).



The ability to identify the user’s intent and extract data and relevant entities contained in the user’s request is the first condition and the most relevant step at the core of a chatbot: If you are not able to correctly understand the user’s request, you won’t be able to provide the correct answer.
Returning the response: once the user’s intent has been identified, the chatbot must provide the most appropriate response for the user’s request. The answer may be:

• a generic and predefined text
• a text retrieved from a knowledge base that contains different answers
• a contextualized piece of information based on data the user has provided
• data stored in enterprise systems
• the result of an action that the chatbot performed by interacting with one or more backend application
• a disambiguating question that helps the chatbot to correctly understand the user’s request

Why chatbots are important

Chatbot applications streamline interactions between people and services, enhancing customer experience. At the same time, they offer companies new opportunities to improve the customers engagement process and operational efficiency by reducing the typical cost of customer service.

To be successful, a chatbot solution should be able to effectively perform both of these tasks. Human support plays a key role here: Regardless of the kind of approach and the platform, human intervention is crucial in configuring, training and optimizing the chatbot system.
Which chatbot application is right for you?
There are different approaches and tools that you can use to develop a chatbot. Depending on the use case you want to address, some chatbot technologies are more appropriate than others. In order to achieve the desired results, the combination of different AI forms such as natural language processing, machine learning and semantic understanding may be the best option.
In upcoming posts, we will give you an overview of the main chatbot applications so you can evaluate them based on your specific needs and desired goals.

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Wednesday 7 November 2018

Top Programming Languages that can be used for implementing Image Recognition || techtalksgroup ||


Image recognition is one of the features that is deployed in most modern devices and programs. The feature has a wide range of applications, the most common one being in security systems. It enables devices to recognize the identity of a person or object just by its image. Face recognition is a product of image recognition.

Best Programming Language For Image Recognition

1. Matlab

                                            matlab programming language for image recognition
Matlab is an independent programming language that has its own framework and IDE which come in a more robust workspace. The programming language comes with a broad range of tools that you can use to handle more technical programming tasks with ease. Image recognition and face processing are some of the tasks that can be handled by Matlab.
Matlab offers an array of built-in tools for matrix calculation. It is imperative to note that image recognition and matrix calculation go hand in hand. Some of the tools that are available in Matlab can perform complex image processing tasks such as cropping, rotating, masking among others.
There is also a dedicated Matlab code for invoking and implementing face recognition feature. This code uses the AT&T database. For this reason, you should download the AT&T database before using this code. Most advanced face recognition applications are written in Matlab.

2.Python

                                            python programming languages for image recognition
Currently, Python is rated as the most popular programming language. Its simplicity and versatility are some of the reasons why many programmers prefer to use it. Despite being simple, Python is a language that you can depend on to perform complex tasks. It can be used to create image processing and recognition features.
The popularity of Python has made it be quite resourceful. It is packed with several libraries that are needed for several functionalities, among them-image recognition. One of the most powerful and efficient libraries is the Scikit-Learn Machine Learning library. Apart from image recognition, the libraries can be used for more intelligent functions such as face recognition and motion detection.

2. C/C++/C#

                                                             c++
You can never go wrong when it comes to the C family of programming languages. They are powerful and can do anything, including creating image processing and recognition functionalities. The C family of programming languages gives you two options for creating image processing feature. You can choose to code everything from scratch whereby you write the codes manually. The second option is to use the existing libraries that are specially designed for these programming languages. These libraries include OpenGLEmguCV, OpenCV, and many others. They have an intelligent image processing feature for image recognition.

4. Java

                                                      Java Programming Language
Like C and C++, we can never afford to underestimate the power of Java programming language. This language is powerful enough to perform complex functionalities. It can be used to create applications for image processing and image recognition.
As a standalone programming language, you can create an image processing functionality from scratch. The advantage of this method is you will have the full control of the functionality. Alternatively, there are powerful libraries that can be incorporated into Java for the purpose of creating the image recognition feature. OpenCV is just one of the libraries that is compatible with Java. You can choose whichever method that suits you.

The OpenCV Tool

                                                               opencv
Open Source Computer Vision is an advanced tool that is used for real-time processing. It is also a cross-platform tool hence can be integrated into any programming language for the purpose of executing image processing and recognition functions. It can be integrated with C, C++, Java, Python and Android programming languages.
OpenCV comes with patent-free algorithms that you can use without any legal restrictions. It can be used for commercial and academic purposes. It has a dedicated Face Recognizer class which you can use to experiment the capabilities of image recognition feature without any hassle. The class is accompanied by an information-rich documentation which will show you how to implement the image recognition feature. In overall, OpenCV is a go-to tool for image recognition regardless of the programming language that you are using.
There are several other programming languages that you can use for developing image recognition functionality. Before you start using any language, learn how to process matrix as it is the building block of image recognition programming.

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Tuesday 30 October 2018

TOR Enabled Sim Card will keep your communication Anonymous

Although technology has overall made life easier, it has made things a lot less private. As a result, you need to be extra careful when you are browsing online, as it very difficult to maintain privacy out there. It is even possible that your ISP or VPN provider is maintaining a log of everything that you do online.



So, how do we protect our online privacy? Brass Horns Communications, a UK-based non-profit internet service provider that focuses on privacy and anti-surveillance services, has an answer for this. The company is currently beta-testing a SIM card that will automatically route your data through Tor, thereby securing online privacy and evading surveillance.

For those unaware, Tor (originally known as The Onion Router) is a free piece of software for enabling anonymous communication. Tor directs Internet traffic through a free, volunteer-operated network of computers around the world to hide a user’s location and usage from anyone conducting network surveillance or traffic analysis. While Tor protects a user’s privacy, it does not hide the fact that someone is using Tor. The most common method through which people access Tor is the Tor Browser Bundle on desktop, or with the Orbot app on Android.

According to Brass Horn’s Onion3G service site, it claims that the “The Onion3G design is a closed network between your 3G device/MiFi/modem and the Brass Horn Comms Tor bridges, this may make the collection of Internet Connection Records (and by extension other forms of bulk surveillance) less effective.”

It also claims that it’s a safer mobile provider because it only issues “private IP addresses to remote endpoints which if ‘leaked’ won’t identify you or Brass Horn Communications as your ISP.”

Brass Horn Onion3G SIM card only has 3G connectivity. In order to use this Tor-dedicated SIM card, it is necessary to install Orbot app on the device. Further, only apps that have a proxy feature, like Twitter, are compatible. Also, it is available only for Android users.

The Tor-SIM card will cost £2.00 per month for a prepaid account. Further, £0.025 will be charged for per Megabyte (MB) transferred over the network. Pre-payment can be topped up at any time using a credit card like Visa, Mastercard, or cryptocurrencies like Bitcoin, ZCash or Monero.

Currently, the service is offered in the UK only and is likely to be made available to the public in 2019. Those interested in joining the beta phase can find more information here.

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Thursday 18 October 2018

Had you ever imagined of a Cell-Phone without a Battery. Check it Out..!! || techtalksgroup ||


Some years before the basic requirement of any person is simply Food, Cloths, and Shelter but today one more thing is added to this queue at that is Cell-phones . Cell-Phones had become the basic requirements of today user . No work is remained now a days that cannot be performed using a smartphones. Bu the biggest problem that comes with smartphone user is to charge the phone, but suppose a lifestyle where you have to just use the smartphone without getting worry about its battery.

Phone manufacturers are constantly striving to create new products that can run longer on a single battery charge but a team of engineers at the University of Washington (UW) has gone the extra mile: They built a cell phone that doesn't need a battery at all. When radio waves interact with an antenna, the waves induce electricity to flow through the antenna.


While radio waves carry energy and we're surrounded by transmitters generating these waves, this doesn't mean you could power your home by hooking all your electronics to antennas. That's because radio wave propagation follows the inverse-square law — the strength of a radio signal weakens by the square of the distance from the transmitter. It doesn't take long before you're too far from a transmitter to harvest enough electricity to do useful work.

Making a phone call requires that the device you're using has continuous power. "You can't say hello and wait for a minute for the phone to go to sleep and harvest enough power to keep transmitting," said paper co-author Bryce Kellogg, a UW electrical engineering doctoral student, in a press release. "That's been the biggest challenge — the amount of power you can actually gather from ambient radio or light is on the order of 1 or 10 microwatts. So real-time phone operations have been really hard to achieve without developing an entirely new approach to transmitting and receiving speech."

To get around that problem, the team designed a base station that transmits RF signals to the battery-free cell phone. With both the base station and the photodiodes, the phone can operate up to 50 feet or about 15 meters from the base station.

Making a call is simple. You just punch in the phone number you want to call and the circuit board sends this information via radio waves to the base station in a digital packet. The base station takes this data and makes a call on Skype to a cellular network. The station continues to remain in contact with the phone via radio waves, allowing the caller to hear the other side of the conversation. To speak, you just have to hold down a button to activate the microphone.

The simple design means the phone operates on just a few microwatts. Despite the low power approach, the result is pretty amazing.

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Thursday 27 September 2018

What are Rootkits..?? || techtalksgroup ||


What Is a Rootkit?

A rootkit is a clandestine computer program designed to provide continued privileged access to a computer while actively hiding its presence. The term rootkit is a connection of the two words "root" and "kit." Originally, a rootkit was a collection of tools that enabled administrator-level access to a computer or network. Root refers to the Admin account on Unix and Linux systems, and kit refers to the software components that implement the tool. Today rootkits are generally associated with malware – such as Trojans, worms, viruses – that conceal their existence and actions from users and other system processes.

What Can a Rootkit Do?

A rootkit allows someone to maintain command and control over a computer without the computer user/owner knowing about it. Once a rootkit has been installed, the controller of the rootkit has the ability to remotely execute files and change system configurations on the host machine. A rootkit on an infected computer can also access log files and spy on the legitimate computer owner’s usage.

Rootkit Detection

It is difficult to detect rootkits. There are no commercial products available that can find and remove all known and unknown rootkits. There are various ways to look for a rootkit on an infected machine. Detection methods include behavioral-based methods (e.g., looking for strange behavior on a computer system), signature scanning and memory dump analysis. Often, the only option to remove a rootkit is to completely rebuild the compromised system.

Rootkit Protection

Many rootkits penetrate computer systems by piggybacking with software you trust or with a virus. You can safeguard your system from rootkits by ensuring it is kept patched against known vulnerabilities. This includes patches of your OS, applications and up-to-date virus definitions. Don't accept files or open email file attachments from unknown sources. Be careful when installing software and carefully read the end-user license agreements.

Static analysis can detect backdoors and other malicious insertions such as rootkits. Enterprise developers as well as IT departments buying ready-made software can scan their applications to detect threats including "special" and "hidden-credential" backdoors.

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What is GodMode in Windows.? And how to activate it.. || techtalksgroup ||


GodMode is a special folder in Windows that gives you quick access to over 200 tools and settings that are normally tucked away in the Control Panel and other windows and menus.

Once enabled, God Mode lets you do all sorts of things, like quickly open the built-in disk defragmenter, view event logs, access Device Manager, add Bluetooth devices, format disk partitions, update drivers, open Task Manager, change display settings, adjust your mouse settings, show or hide file extensions, change font settings, rename the computer, and a lot more.

The way GodMode works is actually very simple: just name an empty folder on your computer as outlined below, and then instantly, the folder will turn into a super-handy place to change all sorts of Windows settings.

The steps for turning on God Mode is the exact same for Windows 10, Windows 8, and Windows 7:

Make a new folder, anywhere you like.

To do this, right-click or tap-and-hold on any empty space in any folder in Windows, and choose New > Folder.

Important: You need to make a new folder right now, not just use an existing folder that already has files and folders in it. If you proceed to Step 2 using a folder that already has data in it, all of those files will instantly become hidden, and while GodMode will work, your files will not be accessible.
When asked to name the folder, copy and paste this into that text box:

God Mode.{ED7BA470-8E54-465E-825C-99712043E01C}


Note: The beginning “God Mode” text is just a custom name that you can change to whatever you wish to help you identify the folder, but make sure the rest of the name is exactly the same as you see above.

The folder icon will change to a Control Panel icon and anything after your custom folder name will disappear.

Tip: Although we just warned in the previous step to use an empty folder to get to God Mode, there is a way to unhide your files and reverse GodMode if you accidentally did this to an existing folder. See the tip at the bottom of this page for help.

Double-click or double-tap the new folder to open GodMode.

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Monday 24 September 2018

New Zero-Day Vulnerability Found Effecting All Versions of Windows || techtalksgroup ||


A security researcher has publicly disclosed an unpatched zero-day vulnerability in all supported versions of Microsoft Windows operating system (including server editions) after the company failed to patch a responsibly disclosed bug within the 120-days deadline.

Discovered by Lucas Leong of the Trend Micro Security Research team, the zero-day vulnerability resides in Microsoft Jet Database Engine that could allow an attacker to remotely execute malicious code on any vulnerable Windows computer.

The Microsoft JET Database Engine, or simply JET (Joint Engine Technology), is a database engine integrated within several Microsoft products, including Microsoft Access and Visual Basic.

According to the an advisory released by Zero Day Initiative (ZDI), the vulnerability is due to a problem with the management of indexes in the Jet database engine that, if exploited successfully, can cause an out-out-bounds memory write, leading to remote code execution.
An attacker must convince a targeted user into opening a specially crafted JET database file in order to exploit this vulnerability and remotely execute malicious code on a targeted vulnerable Windows computer.
"Crafted data in a database file can trigger a write past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code under the context of the current process," Trend Micro's Zero Day Initiative wrote in its blog post.
"Various applications use this database format. An attacker using this would be able to execute code at the level of the current process."
According to the ZDI researchers, the vulnerability exists in all supported Windows versions, including Windows 10, Windows 8.1, Windows 7, and Windows Server Edition 2008 to 2016.

ZDI reported the vulnerability to Microsoft on May 8, and the tech giant confirmed the bug on 14 May, but failed to patch the vulnerability and release an update within a 120-day (4 months) deadline, making ZDI go public with the vulnerability details.
Proof-of-concept exploit code for the vulnerability has also been published by the Trend Micro its GitHub page.Microsoft is working on a patch for the vulnerability, and since it was not included in September Patch Tuesday, you can expect the fix in Microsoft's October patch release.
Trend Micro recommends all affected users to "restrict interaction with the application to trusted files," as a mitigation until Microsoft comes up with a patch.

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