Federal cybersecurity officials have issued a warning to Microsoft users about a security flaw allowing hackers to access to certain SharePoint systems.

LONDON >> A security patch released by Microsoft earlier this month failed to fully fix a critical flaw in the U.S. tech company’s SharePoint server software that had been identified at a hacking competition in May,

In yet another alarming example of government systems falling prey to cyber threats, the National Nuclear Security Administration (NNSA) — the U.S. agency

Microsoft is issuing an emergency fix to close off a vulnerability in Microsoft’s SharePoint software that hackers have exploited to carry out widespread attacks on businesses and at least some federal agencies.

Microsoft identified three China-based hacking groups targeting SharePoint vulnerabilities in the ongoing cyberattack, and urged customers to ensure they've applied security updates.

Several entities in South Africa have been compromised by hackers who exploited a security vulnerability in Microsoft's (MSFT) SharePoint servers, according to Eye Security.

A server vulnerability left unpatched by Microsoft has now escalated from espionage to ransomware, hitting hundreds of victims worldwide.

The cybersecurity vendor has also classified it as a high-severity, high-urgency threat, urging organizations running on-premises Microsoft SharePoint servers to apply the necessary patches with immediate effect, rotate all cryptographic material, and engage in incident response efforts.