It's been a year since the WannaCry ransomware's big attack that caused damage to over 230.000 computers. The malware spread so quickly because the development team had combined the ransomware with EternalBlue, a tool leaked by “hacking arsenal” of the NSA. EternalBlue allowed WannaCry to use worm-like capabilities to install itself on vulnerable Windows systems.
Initially many believed that WannaCry was emailed, but ransomware did not require any interaction between its users - victims. With the EternalBlue and a leaked tool from the NSA DoublePulsar), the worm was looking for vulnerable SMB ports to enter vulnerable systems.
Once exploits for SMB were detected, they were used not only to spread WannaCry on a single computer, but also to transmit it to all computers on the same network.
Η ισπανική εταιρεία κινητής τηλεφωνίας Telefónica ήταν μία από τις πρώτες μεγάλες εταιρείες που ανέφεραν προβλήματα από το WannaCry, ενώ μέχρι το απόγευμα της 12ης Μαΐου, το NHS του Ηνωμένου Βασιλείου ανέφερε προβλήματα, σε νοσοκομεία, ιατρικές χειρουργικές επεμfundamentals across the country, but also to thousands of dates that existed online.
The French car industry Renault and German railway company Deutsche Bahn were also on the list of high-profile victims in Europe, while some Russian ministries and companies in the country did not escape the disaster.
Attackers called for 300 dollars at a specific address and threatened to double the ransom if they were not paid within three days. If the victim did not pay within a week, their files would be deleted.
Of course, security researchers and governments alike do not recommend paying a ransom. But which of them can make up for the lost? data; Of course, the counterargument came from researchers who they discovered that even if ransom was paid, encryption of ransomware did not allow decryption of files.
But what did this story tell us? Before the evil started, everything was calm as it is today. Friends chatted on Facebook, trolls raced on Twitter, and others were looking for a good movie for the night.
Among them, and among us there are many who have not kept a backup of their system. Or others still kept, but have it on a portable unit δίσκου, μόνιμα συνδεδεμένη με τον υπολογιστή τους. Να αναφέρουμε και τους ξέγνοιαστους που αγόρασαν (ή έσπασαν) κάποιο super duper antivirus…
Yes, they are the same people who, after the "unfortunate" moment, desperately seek help, in chats, forums and from the technicians of the company or the neighborhood.
What did you learn from history?
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