Sadly, the program had two main caveats: It can only operate if the system has been recently infected and not rebooted since, and it was only effective on Windows XP. Kaspersky's research backs this up with only a small number of infections reported on Windows 10 devices.
"We have not seen any instances where those infected had their files deleted".
Raiu's claim countered an assertion made by virtually every media report and blog post published after "WannaCry" emerged June 12.
Now all the above-mentioned versions of Windows users can have a sigh of relief if infected by the ransomware.
Earlier this year, Microsoft announced that it will continue to support Windows 7 until 2020, however, Markus Nitschke, Head of Windows at Microsoft Germany previously warned users, particularly business owners, of the dangers of using the operating system.
The reason for XP's absence from the WannaCry count was simple. That happened here with some systems of Windows.
If you're a Windows user, then you most likely heard about the nasty ransomware that's been going around and infecting computers.
Yet, even with the US-CERT warning and the Microsoft patch, many enterprises did not update their systems.
It was also noted that instead of releasing the security updates for free, Microsoft reportedly charged some customers an annual fee of $1,000 for the protection of their computers.
It wasn't a surprise that WannaCry's backers had primarily pointed the attack at Windows 7.
They are having more luck dissecting flaws that limited its spread. Updated computers were protected. All this puts in doubt the security of this operating system.
Other factors may have played a part, however.
"Windows 7...does not meet the requirements of modern technology, nor the high security requirements of IT departments", he said. On the other hand, Microsoft newer OS Windows 10 is running pretty smoothly and hasn't been affected much by this issue. The 64-bit edition is used widely by large organizations, according to figures from Kaspersky. Windows 7 Pro and Windows 7 Home (64-bit) outnumbered their 32-bit comrades by nearly two to one.
Only 309 transactions worth around $94,000 appear to have been paid into WannaCryblackmail accounts by Friday 1345 GMT, seven days after the attack began.
While WannaCry is still evolving, people so far have been largely unaware about its reach, except for knowing that it targets almost all Windows versions released before Windows 10.