The cyber-security firm Wiz has estimated that roughly 70 percent of the internet is affected, though the BBC is unable to independently verify that figure. The flaws were first discovered by artificial intelligence, after which governments urged anyone who uses PHP to address them.
Governments and some of the world's biggest companies are rushing to protect systems that use PHP before hackers can exploit the flaws. PHP powers a vast number of platforms, including online shops, Wikipedia, and WordPress, which is the content management system behind many websites like blogs.
The UK government is working to identify any potential exposure in its online services after critical cyber-security flaws were identified in the PHP programming language that underpins a significant number of the world's websites.
Websites were taken down worldwide as governments and companies scrambled to protect their infrastructure. Amazon said its threat intelligence system identified it was targeted on Saturday, with the attacks occurring after the leak but before the embargo was lifted on the PHP warning.
Websites taken down worldwide as critical cyber-security update issued Governments and companies are scrambling to protect their websites, as Amazon says it experienced attacks before the warning was made public.
"Where immediate remediation is not feasible, organisations should consider taking the system offline until it can be fully mitigated,"the NCSC said., external Amazon said its threat intelligence system identified it was targeted on Saturday.
The UK government says it is working to identify any potential exposure in its online services, after critical cyber-security flaws were identified in the PHP programming language that underpins a significant number of the world's websites.
Cyber security researcher Ryan Austin, who has been researching PHP security for the last 20 years, said he discovered the flaw in the programming language.
This was in line with advice issued by governments, including the US, to take websites down if the flaws could not immediately be fixed.