Governments and companies worldwide are racing to check their exposure after security researchers used artificial intelligence to uncover long-hidden flaws in PHP, the programming language underpinning a vast share of the internet, according to the BBC.

Amazon says it had already faced attacks exploiting the flaws before the warning was made public, according to the BBC, raising fears that malicious actors found the bugs first.

Why it matters: PHP powers core government and corporate infrastructure worldwide, making this a cross-border issue.

Unclear so far: how long attackers had access before the warning, and how many organisations worldwide have patched.