A significant cyberattack has emerged, with hackers exploiting a critical zero-day vulnerability in Microsoft SharePoint servers. The breach, which has reportedly affected over 100 organizations globally, is believed to involve China-backed hackers. Security experts warn that the ongoing attacks are actively exploiting the flaw, prompting swift action from Microsoft and government agencies, including CISA. Microsoft has released urgent patches to address the vulnerabilities, but some systems remain at risk. Authorities are urging all SharePoint customers to implement security updates promptly as the threat continues to escalate.