The food giant Mondelez, legal firm DLA Piper, Danish shipping and transport giant AP Moller-Maersk and Heritage Valley Health System, which runs hospitals and care facilities in Pittsburgh, also said their systems had been hit by the malware.
Experts are still unsure about the attack's origins or its real goal. A security researcher at Cybereason has discovered that creating a file called "perfc", making it read-only, and saving it in the computer's "C:\Windows" folder is enough to deactivate the malware, so that it does not start encrypting important files.
The new Petya ransomware spreads from one infected computer to others on its network, even if those computers have been updated.
MOSCOW/KIEV Russia's top oil producer Rosneft said a large-scale cyber attack hit its servers on Tuesday and computer systems at some banks and the main airport in neighbouring Ukraine were also disrupted.
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Ben Johnson: How does this attack appear to be different than May's attack?
"A massive ransomware campaign is now unfolding worldwide", said Romanian cybersecurity company Bitdefender, where analyst Bogdan Botezatu said that it appeared to be almost identical to GoldenEye, one of a family of hostage- taking programs that has been circulating for months. It is also incredibly vulnerable to electronic attack from tech-savvy perpetrators with a significant amount of malice.
The complexity of the attack has fueled debate over whether the malware is a new threat or a more sophisticated version of the Petya malware that was used in an attack last spring.
Unlike the WannaCry malware, which has been around for awhile and exploited the Windows operating system, the latest outbreak appears to be carried out by a new and more risky malware. "With this one, it's a lot more complicated", Gavin Millard, technical director at Tenable Network Security, a US-based cyber-security company specialising in spotting vulnerabilities in networks, told Al Jazeera.
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Now the list concludes with Zyzzyva , a tropical weevil native to South American which is usually found on or near palm trees. The OED tracks the changes and developments in word meanings over time and it the definite record of the English language.
So how did it spread? Maersk said its sites were down across "multiple sites and businesses due to a cyberattack;" Rosnoft said it faced a "powerful hacker attack".
A spokesman for the company said that " They are continuing to investigate and take appropriate action to protect their customers".
MeDoc initially posted an update to its website on Tuesday saying, in Russian, "Attention!"
As reported on Tuesday, the method by which victims can pay the ransom fee has been rendered useless. In this instance, hackers are asking for $300 worth of Bitcoin. However, that email address has been shut down by the email provider.
These factors contribute to a now-prevailing theory that this was a politically motivated attack on Ukraine, coming as it did just as the country is set to celebrate its Constitution Day. The most basic, malware gets filtered out using an antivirus program.
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Chance the Rapper and Migos are up for four nominations as wel, and a full list of the 2017 BET Awards nominees is available here. Another exciting year and the 17th BET Awards are sure to entertain and enthrall viewers.