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WannaCry Ransomwere attack explain | How to protect yourself | Biggest cyber attack

246 views · Published 15 May 2017 · 3:51 · Indexed 25 September 2026

Channel: Yusuf Jacks · 2017 · Science & Technology

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WannaCry (or WannaCrypt, WanaCrypt0r 2.0, Wanna Decryptor is a ransomware program targeting the Microsoft Windowsoperating system. On Friday, 12 May 2017, a large cyber-attack was launched using it, infecting more than 230,000 computers in 150 countries, demanding ransom payments in the cryptocurrency Bitcoin in 28 languages The attack has been described by 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,[16] but also uses theEternalBlue exploit and DoublePulsarbackdoor developed by the U.S. National Security Agency (NSA) to spread through a network which has not installed recent security updates to directly infect any exposed systems. A "critical" patch had been issued by Microsoft on 14 March 2017 to remove the underlying vulnerability for supported systems, but many organizations had not yet applied it.

Those still running exposed older,unsupported operating systems were initially at particular risk, such as Windows XP andWindows Server 2003, but Microsoft has now taken the unusual step of releasing updates for these.

Shortly after the attack began, a web security researcher who blogs as MalwareTech accidentally found an effective kill switch, registering a website that was mentioned in the code of the ransomware. This slowed the spread of infection, but new versions have now been detected that lack the kill switch .
Go to wikipedia for more ..

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don't install any application (.exc) file from any unknown source..

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WannaCry Ransomwere attack explain | How to protect yourself | Biggest cyber attack

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