Mastodon says its flagship server was hit by a DDoS attack

The DDoS attack against Mastodon's flagship server comes less than a week after Bluesky was targeted with junk web traffic.
Communications of the ACM

Subscription Bombing: Email under Attack

Email subscription bombing (also known as subscription flooding or email spam bombing) is an attack technique that overwhelms ...
Forbes

Microsoft Confirms Global SharePoint Attack — Emergency Update Issued

Update, July 21, 2025: This story, originally published on July 20, has been updated to include additional expert comments regarding the global zero-day attack impacting Microsoft on-premise ...
CRN

Five Things To Know On Microsoft SharePoint Server ‘ToolShell’ Attacks

Security experts are urging organizations with on-premises SharePoint Servers to deploy emergency patches amid attacks that have reportedly led to compromises worldwide. Security experts are urging ...
CNN

Microsoft alerts businesses and governments to attacks on SharePoint servers

Microsoft has issued an alert about “active attacks” on server software used by government agencies and businesses to share documents within organizations and recommended security updates that ...
CSO Online

Critical nginx UI tool vulnerability opens web servers to full compromise

The vulnerability, with a CVSS score of 9.8, relates to the software’s support for Model Context Protocol (MCP) servers, ...
Hosted on MSN

CISA releases malware analysis for Sharepoint Server attack

CISA has published a malware analysis report with compromise indicators and Sigma rules for "ToolShell" attacks targeting specific Microsoft SharePoint Server versions.… "Cyber threat actors have ...