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A critical flaw was found in the designs of Intel's chips, which will force all the big Tech companies like, Microsoft, Apple to update their OS software globally.
The gravity and seriousness of the issues is gigantic, the estimated number of compromised computer from the last decade alone is in the millions of computers.
“Based on analysis to date, many types of computing devices - with many different vendors' processors and operating systems - are susceptible to these exploits,” it said in a statement from a spokesperson with Intel.
It said it was working to “develop an industry-wide approach to resolve this issue promptly and constructively”.
“Intel has begun providing software and firmware updates to mitigate these exploits,” it said.
Often when researchers discover a security problem, they share the information with the affected company so the issue can be fixed.
Typically, both parties agree not to publicise the problem until a fix has been implemented, so that criminals cannot take advantage of the issue.
This time it looks like somebody jumped the gun and information was leaked before a software fix was ready for distribution.
Intel said it had planned to share information next week, and several security researchers have tweeted that they have made a secrecy pact with the chip-maker.
That leaves the company in an uncomfortable situation, with a widely-publicised problem before the fix is ready to go.
Experts advised caution on the issue.
“It is significant but whether it will be exploited widely is another matter,” said Prof Alan Woodward, from the University of Surrey.
“The actual flaw is being rather tightly kept under wraps but from what researchers have gleaned themselves, it's all to do with a flaw in the way certain Intel CPUs address certain types of memory.
“If it is really bad then it may allow an exploit to read parts of the computer memory that should never be reached.”
Experts have said that the fix could slow down the performance of computers by up to 30% but Intel played this down, saying that “for the average user, performance impacts should not be significant and will be mitigated over time”.
In response to the news, the NCSC said: “We are aware of reports about a potential flaw affecting some computer processors. At this stage there is no evidence of any malicious exploitation and patches are being produced for the major platforms.”
“The NCSC advises that all organisations and home users continue to protect their systems from threats by installing patches as soon as they become available.”