Singapore's cyber regulator has warned organisations to act immediately against two critical flaws in PHP, a programming language widely used to power websites and online services. The Cyber Security Agency says hackers could exploit the weaknesses to take control of vulnerable servers, potentially stealing sensitive data or disrupting services. Companies worldwide are scrambling to secure their systems, with Singapore businesses also taking urgent precautions. PHP is used by nearly 70% of websites whose server-side programming language is known.