JAVA For Beginner

JAVA

Welcome to the world of Java! In this challenge, we practice printing to stdout.

The code stubs in your editor declare a Solution class and a main method. Complete the main method by copying the two lines of code below and pasting them inside the body of your main method.

System.out.println("Hello, World.");
System.out.println("Hello, Java.");

Input Format

There is no input for this challenge.

Output Format

You must print two lines of output:

1.Print Hello, World. on the first line.

2.Print Hello, Java. on the second line.

Sample Output

Hello, World.
Hello, Java.

Write a Code For Java beginner ?

What Is Phishing ?

What Is Phishing And How To Be Safe From Phishing ?

                              

What is Phishing ?

   Phishing is one of the type of hacking . It is a method of acquiring sensitive information such as username, password, bank information etc. Phishing page could be said annan duplicate page of real one. Its look exactly similar as the real page.But when user enter sensitive information on such phishing page his information is send to the E-mail address provided in the phishing page or you can say the one who created that phishing page. Phishing page is mostly send via mail. Target of phishing are mostly social networking sites like facebook, orkut etc. Also Banks website to acquire credit card details,website like yahoo, gmail are also target of phishing.

Example of Phishing scams:

• Email asking you to login to your locked account to unlock it.
• Email carrying a Link to sites like Facebook,yahoo etc and asking you to Login.
• Emails containing some Information of your Interest and asking you to Login to Your Account.

How to be safe from phishing ?

• Never login to any of your account through link provided in the Email.
• Go to real website dont click on any link posted anywhere. such as link posted on your facebook wall by friend or link provided in comments or link to ceratin website on any blog.
• Check the URL of website before entering any sensitive information. Because the URL of phishing page is not same as the URL of  real one.
• Real gmail page looks like gmail.com while phishing looks different somthing like gmail.anything.com

How Your Android’s Pattern Lock Can Be Cracked In Just 5 Attempts.

Short Bytes: Pattern lock on Android smartphones is probably the quickest and easiest way to gain access to the device. A group of researchers has a created a computer vision algorithm which is capable of cracking complex pattern locks with an accuracy of 87.5% after analyzing a video recording. As a protective measure, you can use fingerprint input method on your smartphone.

Afew days ago, Fossbytes wrote about the list of the most popular (dumbest) passwords of 2016. You might be wise enough to consider a tough password for your devices and online accounts. But if you think that pattern lock is more secure than common passwords, your thinking will change after reading this story.

According to a new research published on Phys.org, it possible to crack a smartphone’s pattern lock in around five attempts, after which the device gets locked. It is possible by recording a video of people entering pattern lock on their phone.

The story isn’t as childish as it sounds. You’re not supposed to decipher the pattern from the video afterward. But a computer vision algorithm developed by the researchers – from Lancaster University, Northwest University of China, and the University of Bath – is assigned to do this task.

The algorithm can work with an accuracy of more than 80 percent for complex patterns and crack them in 5 attempts. In fact, they were able to crack simple pattern in the first attempt with 60 percent accuracy.

The software doesn’t even need to look at the screen to crack the pattern lock. It understands the movements of user’s fingers relative the smartphone from the video. After analyzing a video, the algorithm suggests a bunch of possible patterns.

Overall, a total of 120 unique patterns were checked. The researchers note that patterns involving more lines and complex shapes are easier for the algorithm to crack.

The attack can be done on any smartphone. Pattern locks are primarily used on the smartphones running the Android operating system. In the case of iOS devices, Pin lock is mostly used.

How to protect yourself?

It would be hard to protect your Android or any other smartphone from the digital eyes out there in the wild. Recording a video of you entering your pattern lock on your Android smartphone is an easy task for any shoulder surfer in subways.

If we consider a practical scenario, even if a person records a video, it would be hard to gain physical access to your smartphone.

If your Android smartphone has a fingerprint sensor, you can prefer it over the pattern lock. Alternatively, you can cover your fingers while entering the pattern lock. Moreover, keeping a simple pattern lock help as the algorithm finds it difficult to crack.

Did you find this helpful? Drop your thoughts in the comments.

Best CMD Commands

Commands Used In Hacking, The Ultimate Guide

Windows is most powerful GUI based operating system. You can easily install any software, according to your need in windows based PC. Command prompt is one the most powerful tool is windows. You can do anything with the command prompt.

DOS operating system – you can perform any task with the help of command. DOS is the first command based operating system from the Microsoft. DOS was fully command based operating system.

In this article, we are going to provide you a list of best CMD commands used in Hacking. If you wanna be a hacker learn these commands very carefully. Let’s drive it.

Best CMD Commands Used In Hacking

1. Ping

This command allows you to determine TCP/IP, networks and IP address. It also determines the issues with network and assists in resolving them.

ping x.x.x.x (where x – x is the IP address). You can try pinging 8.8.8.8, which is Google default IP address. Or you can “ping www.google.com” (this is the website you want to ping, if you don’t know the IP address).

2. nslookup

Nslookup is a network administration command line that is used for querying the Domain Name System (DNS) to obtain the IP address mapping or domain name.

For instance: ‘nslookup www.google.com’ (this command allows you to find IP address of www.google.com).

Yeah! You can also find out the IP address of specific Mail Servers through nslookup.

nslookup (press enter)
set type=mx (press enter again)
google.com/yahoo.com

This command will give you the mail server of IP of google.com/yahoo.com.

3. tracert

tracert is a command-line utility that records the route through the internet between your computer and a specified destination computer. It calculates and displays the amount of time each hop took.

tracert x.x.x.x (x is the IP address) or, ‘tracetrt www.google.com‘ (if you want to know the IP address of www.google.com).

4. arp

arp command will show you the arp table. This command also helps you to find out if someone has made up poisoning in your LAN using this command.

arp -a

5. route

route command will show you the routing table, gateway, interface and metric.

route print

6. ipconfig

This is of the most important command, it will show you a lot of useful things, for instance – your IP, Gateway, DNS in use etc.

ipconfig or ipconfig/all Also, if you are using dynamic IP address and want to change it, then type.

ipconfig/release (this will release your IP address)
ipconfig/renew (this will renew your IP address)

7. Netstat CMD command

This command allows you to find out, who is establishing a connection with your computer. This command provides the information about all active connection and listings ports.

netstat-a (display all connections).
netstat-n (sorts connection in numerical order).
netstat-b (display executable. This is browser name).

For Video Tutorial

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SSL Certificate

The SSL Certificate And Your Website’s Security.

When you are surfing the internet, a lot of information is being exchanged between the web host and the device being used to surf the internet. This type of information can always be easily breached by hackers, especially if it involves online transactions and this has always been a major issue when dealing with the internet. Nowadays, cases of online theft are becoming increasingly popular. There is one way of determining whether a site is safe to use through an SSL Certificate which is powered by the beauty of cryptography.

How SSL Cryptography Works?

Cryptography ensures that data is transmitted in a means that only the intended party can access it. You can easily determine a site which has an SSL certificate by the padlock icon that is displayed beside the web address. So how do SSL certificates work? SSL in full is Secure Sockets Layer. An SSL certificate provides tight security during the exchange of data.

In SSL cryptography, encryption makes use of separate keys for the decryption and encryption of data. Encryption keys are public and anyone can use them. But the decryption keys (ones used to turn encrypted data into meaningful information) are private and are kept secret. The SSL certificate, on the other hand, can simply be described as a tiny data file that has the appropriate information about a certain website. The information can be quickly read by the host connection once the request for connection is received. It is through an SSL that a website can prove its authenticity to a web browser.

How To Get SSL Certificate?

An SSL certificate is not handed out like a college certificate. There are a number of companies called Certificate Authorities (CA)that authenticate that a site/server is legitimate and sign a resultant digital certificate which is then stored, just like a cookie is stored on your browser. The certificate will continuously alert all incoming connections and protocols that the connection is trustworthy.

SSL Certificate Advantages

SSL certificates make online data-exchange, especially financial transactions, safer. It is a common rule of thumb not to trust any e-commerce site that does not have an SSL certificate. There is just too much information floating around online nowadays such as credit card info, banking information etc. The safety of all these vital information will be ensured by the SSL certificate, and every browser will accept the websites incoming connections. However, most small websites, such as blogs, don’t really need to supply an SSL certificate.