Bitcoin attack

bitcoin attack
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Published on May 15, Tagged with Cyber Attacks As of Friday 12 Maymultiple variants of a ransomware named WannaCry have been spreading globally, affecting hundreds of thousands of users, organizations, including users in the European Union. It is understood that the cyber attack is focussed on Microsoft Windows based operating systems.

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What makes this event unusual is that this attack impacted many organisations across the world in short period of time. Recent estimates, at this point in time, suggest that approximatelycomputers in over countries have been affected. European Critical infrastructure operators health, energy, transport, finance and telecomsmanufacturers and service providers have been affected.

This malware also affected computers used for dedicated tasks such as robotics, information display systems or medical trading ghid de cripto. A number of car manufacturing plants in the UK, France, Romania and Slovenia bitcoin attack already indicated that their production lines are affected by this malware.

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The ransomware prevents access by encrypting multiple common file types such as documents, images and videos, asks for a ransom and distributes automatically. The key characteristic of this bitcoin attack is a fast propagation bitcoin attack a known critical vulnerability affecting Microsoft Windows systems, exploited by the ransomware without user interaction.

ENISA understands that at this point in time users who are using the latest version of the windows operating system and have their software up to date bitcoin attack not affected by this attack.

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Users affected by ransomware are generally presented with a message on the screen indicating that their computer systems and or files have been blocked and that the files will be unblocked if a ransom is paid. Payment is often requested to be made using bitcoin as an attempt to effect a money transfer in an anonymous way.

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This type of cyber-attack does not generally involve the stealing of personal data. The compromise can be displayed in a number of ways including Not being able to access your files Access to certain operational programs being blocked Analysis of the malware by ENISA, indicates that different encryption keys are generated for different files.

In this regard the malware is relatively sophisticated.

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Ransomware attacks are generally successful when an internet user opens an email with an attachment containing malware. In this particular case the infection vector involves targeting vulnerable computers with identified open ports.

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No action was required by the user to become infected. As with all types of security there is no guarantee and users are recommended to follow best practice to minimise the risk of attack.

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Users are advised that payment of the ransom does not guarantee that the user will receive the code to decrypt their files or that their computers will be restored to its proper function. Affected users are advised to seek expert assistance and to contact law enforcement personnel to report the crime.

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