The malware spread quickly on Friday, with medical staff in the United Kingdom reportedly seeing computers go down "one by one". It surfaced on Friday and locked users out of their computers by encrypting important files - leaving only one way out i.e.by paying $300 of ransom in Bitcoin. A report in The Guardian yesterday said the attack had hit systems in 99 countries.
Some reports said Russian Federation had seen more infections than any other single country.
In short, banks, financial institutions, large enterprises, small enterprises - all will be hit, and there is no doubt about it. The only regional country that seems to have been affected is Iran, where it has been reported that up to 2000 computers were impacted. What was going on?
While the identity of the attackers or the country of its origin remains unknown, the attacks have slowed down, thanks to Marcus. If you are not aware of it then please avoid clicking on that source. For users running pirated Windows, getting infected with WannaCry is just one of the risks they agree with when not getting a genuine license.
The best protection against ransomware is to back up all of the information and files on your devices in a completely separate system. And, if you were guessing that Windows 10 wouldn't catch this malware, you might be wrong.
The researcher, identified only as "MalwareTech", found a "kill switch" within the ransomware as he studied its structure.
What is WannaCry Ransomware? "The struggle for smaller firms is they don't necessarily have the resources to call in experts to clean up their networks in the aftermath of an attack such as this". "In India, the use of outdated software is a big problem when it comes to be safe from these attacks", he said.
Years ago, Microsoft released its Windows XP operating system, which turned out to have a flaw.
WannaCry leverages a Windows vulnerability that the NSA knew about, and which was disclosed in January 2017. The NSA, on the other hand, should feel nothing but shame. If an email appears to have come from your bank, credit card company or internet service provider, keep in mind that they will never ask for sensitive information like your password or social security number.
Companies who haven't applied to Windows to update their servers can do so here.
That's bad. But it's important to note that all the affected equipment was nearly universally running old, outdated and often unsupported versions of Windows. In-fact, to recall, Microsoft recently issued a patch for non-supported OS version such as Windows XP, Windows Server 2003, and Windows 8. Still, beyond the piracy issue, we will no doubt hear for weeks about WannaCry infections because some organizations will be slow to install the patches.
How to protect yourself from WannaCry?It warns not to try and use a decryptor else the files may break.
To disable it, first search for "Windows features".
Shortly after registering the domain, MalwareTech discovered that "our registration of the domain had actually stopped the ransomware and prevent the spread". As we've seen with WannaCry, ransomware (and other malicious software) can spread virally, without user interaction.
If you're not patching, if you're not using tools like this, and if you're not being somewhat paranoid, there is zero doubt: You are vulnerable. That means you can't train your way out of this.