Essay on Ransomware: Simple Ransomware Essay for Students in English

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INTRODUCTION – Essay on Ransomware

WannaCry (or WannaCrypt, WanaCryptor 2.0, Wanna Decryptor) Is a ransomware program targeting the Microsoft Windows operating system.

On Friday, 12 May 2017, a large cyber-attack using it was launched, infecting more than 230,000 computers in 150 countries, demanding ransom payments in the cryptocurrency bitcoin in 28 languages.

Essay on Ransomware

The attack has been described by Europol as unprecedented in scale. The attack affected Telefónica and several other large companies in Spain,

as well as parts of Britain’s National Health Service (NHS), FedEx, Deutsche Bahn and LATAM Airlines.

Other targets in at least 99 countries were also reported to have been attacked around the same time.

Like previous ransomware, the attack spreads by phishing emails, but also can infect directly across a network – using the Eternal Blue exploit developed by the U.S.

National Security Agency (NSA) – any exposed systems which have not installed recent security updates Although a “critical” patch to remove the underlying vulnerability for supported systems had been issued by Microsoft on 14 March 2017, many organizations had not yet applied this.

Those still running exposed older, unsupported operating systems, such as Windows XP and Windows Server 2003 were initially at particular risk,

but Microsoft has now taken the unusual step of releasing updates for these.

Shortly after the attack began a researcher found an effective kill switch, which slowed the spread of infection, but new versions that lack the kill switch have now been detected.

A type of virus that infect computers, and then prevent the user from accessing the operating system, or encrypts all the data stored on the
computer,

The user is asked to pay a fixed amount of money, as opposed to decrypting files or allowing access again to the
operating system.

Ransomware Worldwide Attack – Essay on Ransomware

On 12 May 2017, WannaCry began affecting
computers worldwide.

The initial infection might have been either through a vulnerability in the network defenses or a very well-crafted spear phishing attack.

When executed, the malware first checks the “kill switch” domain name[a].

If it is not found, then the ransomware encrypts the computer’s data, then attempts to exploit the SMB vulnerability to spread out to random computers on the Internet, and “laterally” to computers on the same network.

As with other modern ransomware, the payload displays a message informing the user that files have been encrypted, and demands a payment of around $300 in bitcoin within three days or $600
within seven days.

Impact:- Essay on Ransomware

The ransomware campaign was unprecedented in scale according to Europol. The attack affected many National Health Service hospitals in England and Scotland,

and up to 70,000 devices — including computers, MRI scanners, blood-storage refrigerators and theatre equipment — may have been affected.

On 12 May, some NHS services had to turn away non- critical emergencies, and some ambulances were diverted.

In 2016, thousands of computers in 42
separate NHS trusts in England were reported to be still running Windows XP.

NHS hospitals in Wales and Northern Ireland were unaffected by the attack.

Wanna Cry Ransomware Guidelines to stay safe :

Be careful to click on harmful links in your emails.

Be wary of visiting unsafe or unreliable sites.

Never click on a link that you do not trust on a web page or access to Facebook or messaging applications such as WhatsApp and other applications from unreliable resources.

If you receive a message from your friend with a link, ask him before opening the link to confirm (infected machines send random
messages with links).

Keep your files backed up regularly and periodically.

Be aware of fraudulent e-mail messages that use names similar to popular services such as PayePal instead of PayPal or use popular service names without commas or excessive characters.

Use anti virus and Always be updated.

Use Windows Update to update windows to close the gap.

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