How to protect yourself from ransomware

Dear Customer,

Please don’t open unknown attachments and also don’t open mails from unknown sender.

It has been reported that a new ransomware named as “Wannacry” is spreading widely. Wannacry encrypts the files on infected Windows systems. This ransomware spreads by exploiting vulnerable Windows Systems.

Ransomware is a type of malicious software that carries out the cryptoviral extortion attack from cryptovirology that blocks access to data until a ransom is paid and displays a message requesting payment to unlock it.

Today many of our customers around the world and the critical systems they depend on were victims of malicious “WannaCrypt” software. Seeing businesses and individuals affected by cyber attacks, such as the ones reported in last couple of days was painful. Microsoft worked throughout the day to ensure we understood the attack and were taking all possible actions to protect our customers. This blog spells out the steps every individual and business should take to stay protected. Additionally, we are taking the highly unusual step of providing a security update for all customers to protect Windows platforms that are in custom support only, including Windows XP, Windows 8, and Windows Server 2003. Customers running Windows 10 were not targeted by the attack today.

Details are below.
In March, we released a security update which addresses the vulnerability that these attacks are exploiting. Those who have Windows Update enabled are protected against attacks on this vulnerability. For those organizations who have not yet applied the security update, we suggest you immediately deploy Microsoft Security Bulletin MS17-010.

For customers using Windows Defender, we released an update earlier today which detects this threat asRansom:Win32/WannaCrypt. As an additional “defense-in-depth” measure, keep up-to-date anti-malware software installed on your machines. Customers running anti-malware software from any number of security companies can confirm with their provider, that they are protected.

This attack type may evolve over time, so any additional defense-in-depth strategies will provide additional protections. (For example, to further protect against SMBv1 attacks, customers should consider blocking legacy protocols on their networks).

We also know that some of our customers are running versions of Windows that no longer receive mainstream support. That means those customers will not have received the above mentioned Security Update released in March. Given the potential impact to customers and their businesses, we made the decision to make the Security Update for platforms in custom support only, Windows XP, Windows 8, and Windows Server 2003, broadly available for download (see links below).

This decision was made based on an assessment of this situation, with the principle of protecting our customer ecosystem overall, firmly in mind.

Some of the observed attacks use common phishing tactics including malicious attachments. Customers should use vigilance when opening documents from untrusted or unknown sources. For Office 365 customers we are continually monitoring and updating to protect against these kinds of threats including Ransom:Win32/WannaCrypt. More information on the malware itself is available from the Microsoft Malware Protection Center on the Windows Security blog. For those new to the Microsoft Malware Protection Center, this is a technical discussion focused on providing the IT Security Professional with information to help further protect systems.

We are working with customers to provide additional assistance as this situation evolves,and will update the following blog with details as appropriate.

https://blogs.technet.microsoft.com/msrc/2017/05/12/customer-guidance-for-wannacrypt-attacks/

Further resources: –

Download English language security updates: Windows Server 2003 SP2 x64, Windows Server 2003 SP2 x86, Windows XP SP2 x64, Windows XP SP3 x86, Windows XP Embedded SP3 x86, Windows 8 x86, Windows 8 x64

To download localized versions for the security update for Windows XP, Windows 8 or Windows Server:http://www.catalog.update.microsoft.com/Search.aspx?q=KB4012598

General information on ransomware: https://www.microsoft.com/en-us/security/portal/mmpc/shared/ransomware.aspx

MS17-010 Security Update: https://technet.microsoft.com/en-us/library/security/ms17-010.aspx

More details available here online webcast from My Gov
It has been reported that a new ransomware named as “Wannacry” is spreading widely. Wannacry encrypts the files on infected Windows systems. This ransomware spreads by exploiting vulnerable Windows Systems. The Indian Computer Emergency Response Team has issued advisory regarding prevention of this threat.

In view of high damage potential of the ransomware a webcast has been arranged to create awareness among users/organisations.

The webcast on the topic “Prevention of WannaCry Ransomware Threat – session by CERT-In” will be broadcast on  http://webcast.gov.in/cert-in/ on 15th May 2017

Please do tune in to the broadcast to learn more and protect yourself.​

WhatsApp Image 2017-05-15 at 09.23.58 WhatsApp Image 2017-05-15 at 11.43.00

HOW IT WORKS:
WhatsApp Image 2017-05-15 at 13.18.19

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