There are multiple reports from countries around the world that their computers have been hit by ransomware. Part of the ransom reads as shown in the image above.
Security experts have confirmed that the ransomware, believed to be a variant of Petya or Petrwap, is spreading by exploiting an NSA-built Windows exploit known as "Eternal Blue".
Eternal Blue was developed by the United States' National Security Agency for the purpose of infecting the computers of those it wished to spy upon. As a consequence, the NSA didn't tell Microsoft about the vulnerability it had discovered in Windows *until* details were stolen from the agency by a mysterious group of hackers known as the Shadow Brokers.
The fact that the NSA initially hoarded details of the security holes in Microsoft's code has put organisations around the world at risk.
Eternal Blue was a key part of how the WannaCry ransomware spread so quickly earlier this year, and *has* now been patched by Microsoft for some months. Clearly, however, many organisations have still failed to put those security patches in place.
Some of the earliest reports of affected computers came from government offices and energy companies in Ukraine, as well as the airport of the country's capital Kiev where BBC News reports that flights may be delayed as a consequence.
Rozenko Pavlo, deputy prime minister of Ukraine, tweeted a photograph of his computer - seemingly mid-way through being encrypted by the ransomware.
However, the attack does not appear to have limited itself to Ukraine.
For instance, there have been additional reports that the Spanish offices of multinational companies such as law firm DLA Piper have been hit by a malware attack that is encrypting files on their computers and demanding a ransom of US $300 in Bitcoin be paid to the extortionists.
Meanwhile marketing giant WPP says that several of its companies have suffered as a result of a "suspected cyber attack".
Other victims include Maersk, the international shipping logistics company, which confirmed via Twitter that it had fallen victim to a cyber attack.
There have also been reports of infections in Russia, India and the UK, and it seems unlikely that that will be the end of it.
I really hope you learnt a lesson from the WannaCry ransomware outbreak and put some secure backup systems in place...
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