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What is Ransomware.

                   What is Ransomware?

" Ransomware is a form of malicious software that locks up the files on your computer, encrypts them, and demands that you pay to get your files back. Wanna Decryptor, or WannaCry, is a form of ransomware that affects Microsoft’s Windows operating system. When a system is infected, a pop up window appears, prompting you to pay to recover all your files within three days, with a countdown timer on the left of the window. It adds that if you fail to pay within that time, the fee will be doubled, and if you don’t pay within seven days, you will lose the files forever. Payment is accepted only with Bitcoin."

How does it spread?

According to the US Computer Emergency Readiness Team (USCRT), under the Department of Homeland Security, ransomware spreads easily when it encounters unpatched or outdated software. Experts say that WannaCry is spread by an internet worm -- software that spreads copies of itself by hacking into other computers on a network, rather than the usual case of prompting unsuspecting users to open attachments. It is believe that the cyber attack was carried out with the help of tools stolen from the National Security Agency (NSA) of the United States.

Some forms of malware can lock the computer entirely, or set off a series of pop-ups that are nearly impossible to close, thereby hindering your work.

What can be done to prevent this?

The best way to protect your computer is to create regular backups of your files. The malware only affects files that exist in the computer. If you have created a thorough backup and your machine is infected with ransomware, you can reset your machine to begin on a clean slate, reinstall the software and restore your files from the backup. According to Microsoft’s Malware Protection Centre, other precautions include regularly updating your anti-virus program; enabling pop-up blockers; updating all software periodically; ensure the smart screen (in Internet Explorer) is turned on, which helps identify reported phishing and malware websites; avoid opening attachments that may appear suspicious.

Who has it affected so far?

It was first reported from Sweden, Britain and France, but Russia and Taiwan are said to be the worst hit, according to US media. Over 75,000 systems have been affected. Major companies that have reported attacks are FedEx, Telefonica and National Health Service (UK).

The concept of file encrypting ransomware was invented and implemented by Young and Yung at Columbia University and was presented at the 1996 IEEE Security & Privacy conference. It is called cryptoviral extortion and is the following 3-round protocol carried out between the attacker and the victim.

[attacker→victim] The attacker generates a key pair and places the corresponding public key in the malware. The malware is released.

[victim→attacker] To carry out the cryptoviral extortion attack, the malware generates a random symmetric key and encrypts the victim's data with it. It uses the public key in the malware to encrypt the symmetric key. This is known as hybrid encryption and it results in a small asymmetric ciphertext as well as the symmetric ciphertext of the victim's data. It zeroizes the symmetric key and the original plaintext data to prevent recovery. It puts up a message to the user that includes the asymmetric ciphertext and how to pay the ransom. The victim sends the asymmetric ciphertext and e-money to the attacker.

[attacker→victim] The attacker receives the payment, deciphers the asymmetric ciphertext with the attacker's private key, and sends the symmetric key to the victim. The victim deciphers the encrypted data with the needed symmetric key thereby completing the cryptovirology attack.

The symmetric key is randomly generated and will not assist other victims. At no point is the attacker's private key exposed to victims and the victim need only send a very small ciphertext (the encrypted symmetric-cipher key) to the attacker.

Ransomware attacks are typically carried out using a Trojan, entering a system through, for example, a downloaded file or a vulnerability in a network service. The program then runs a payload, which locks the system in some fashion, or claims to lock the system but does not (e.g., a scareware program). Payloads may display a fake warning purportedly by an entity such as a law enforcement agency, falsely claiming that the system has been used for illegal activities, contains content such as pornography and "pirated" media.

Some payloads consist simply of an application designed to lock or restrict the system until payment is made, typically by setting the Windows Shell to itself,[16] or even modifying the master boot recordand/or partition table to prevent the operating system from booting until it is repaired. The most sophisticated payloads encrypt files, with many using strong encryption to encrypt the victim's files in such a way that only the malware author has the needed decryption key.

Payment is virtually always the goal, and the victim is coerced into paying for the ransomware to be removed—which may or may not actually occur—either by supplying a program that can decrypt the files, or by sending an unlock code that undoes the payload's changes. A key element in making ransomware work for the attacker is a convenient payment system that is hard to trace. A range of such payment methods have been used, including wire transfers, premium-rate text messages, pre-paid voucher services such as Paysafecard, and the digital currencyBitcoin. A 2016 census commissioned by Citrix revealed that larger business are holding bitcoin as contingency plans.

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SS Rajamouli will work with Rajinikant only if this condition is met!

SS Rajamouli will work with Rajinikant only if this condition is met ! Check it out!

Baahubali 2 is enjoying a crazy run at the Box Office even after 2 weeks. This epic tale by SS Rajamouli is winning hearts and the record-breaking numbers are a proof of its victory.

Fans loved all the lead actors Prabhas, Rana Dagubbati, Ramya Krishnan, Anushka Shetty and Kattappa; many even thanked SS Rajamouli for coming up with such a mind-blowing movie.

Yesterday, Baahubali 2 (Hindi version) surpassed all big Indian films and became the first one to enter 400 croresin India. Even in the International markets, the numbers are beyond imagination.

Fans loved all the lead actors Prabhas, Rana Dagubbati, Ramya Krishnan, Anushka Shetty and Kattappa; many even thanked SS Rajamouli for coming up with such a mind-blowing movie.Yesterday, Baahubali 2 (Hindi version) surpassed all big Indian films and became the first one to enter 400 ceore in India. Even in the International markets, the numbers are beyond imaginatio

After seeing the film, fans want something bigger now. Many of them have one question in mind i.e. “When will SS Rajamouli direct Rajinikanth?”. We all know that the Thalaivar is considered to be the God of Indian cinema and hence, it will be a pleasure to see both the legends come together.

Finally, SS Rajamouli answered this question in an interview with BBC; he said that he is ready to direct Rajinikanth but only on one condition. Want to know what is it? Well, he says,

“Rajinikanth is humility personified. He’s a huge star in India and people are dying to just see him on the screen. To make a film with Rajinikanth will be a dream come true for any director and I’m not an exception. But I always believe that it’s the story that should drive you. If I come up with something like that and if the story inspires me, I would be happy to work with him.”

Here’s the video of the interview;


Check out @Rajni_FC's Tweet: https://twitter.com/Rajni_FC/status/860457856935448576?s=09

What makes our Mom Happy?

Think... Whats make mom happy..???

You have no idea???

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Best thing we all have.

Watch this video till the end.

Do you want to know what is the best thing we all have???...

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Kanjoos Boyfriend

Kanjoos Boyfriend || Miser boyfriend

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Friend VS Best Friend

This video is all about our FRIEND and our Best FRIEND

Let watch the video till the end to know how much HARAMI is our best friend.

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