ToolShell: a story of five vulnerabilities in Microsoft SharePoint

On July 19–20, 2025, various security companies and national CERTs published alerts about active exploitation of on-premise SharePoint servers. According to the reports, observed attacks did not require authentication, allowed attackers to gain full control over the infected servers, and Read More …

Carnegie Mellon researchers show how LLMs can be taught to autonomously plan and execute real-world cyberattacks

In a groundbreaking development, a team of Carnegie Mellon University researchers has demonstrated that large language models (LLMs) are capable of autonomously planning and executing complex network attacks, shedding light on emerging capabilities of foundation models and their implications for Read More …

Disrupting active exploitation of on-premises SharePoint vulnerabilities

Expanded analysis and threat intelligence from Microsoft continued monitoring of exploitation activity by Storm-2603 leading to the deployment of Warlock ransomware. Based on new information, we have updated the Attribution, Indicators of compromise, extended and clarified Mitigation and protection guidance Read More …

Hundreds of organizations breached by SharePoint mass-hacks

Security researchers say hackers have breached at least 400 organizations by exploiting a zero-day vulnerability in Microsoft SharePoint, signaling a sharp rise in the number of detected compromises since the bug was discovered last week. Eye Security, a Dutch cybersecurity Read More …

#StopRansomware: Interlock

Since September 2024, Interlock ransomware actors have impacted a wide range of businesses and critical infrastructure sectors in North America and Europe. These actors are opportunistic and financially motivated in nature and employ tactics to infiltrate and disrupt the victim’s Read More …

Weak password allowed hackers to sink a 158-year-old company

One password is believed to have been all it took for a ransomware gang to destroy a 158-year-old company and put 700 people out of work. KNP – a Northamptonshire transport company – is just one of tens of thousands Read More …

Ransomware gang attacking NAS devices taken down in major police operation

A 44-year-old Romanian national has been arrested during a law enforcement operation to dismantle a ransomware campaign called “Diskstation”. Diskstation usually targets Synology Network-Attached Storage (NAS) devices, often used in an enterprise environment for centralized file storage and sharing, data Read More …

Hackers are trying to steal passwords and sensitive data from users of Signal clone

Hackers are targeting a previously reported bug in the Signal clone app TeleMessage in an effort to steal users’ private data, according to security researchers and a U.S. government agency. TeleMessage, which earlier this year was revealed to be used Read More …

GhostContainer backdoor: Malware compromising Exchange servers of high-value organizations in Asia

In a recent incident response (IR) case, Kaspersky researchers discovered highly customized malware targeting Exchange infrastructure within government environments. Analysis of detection logs and clues within the sample suggests that the Exchange server was likely compromised via a known N-day Read More …

Ongoing SonicWall Secure Mobile Access (SMA) Exploitation Campaign using the OVERSTEP Backdoor

Google Threat Intelligence Group (GTIG) has identified an ongoing campaign by a suspected financially-motivated threat actor we track as UNC6148, targeting fully patched end-of-life SonicWall Secure Mobile Access (SMA) 100 series appliances. GTIG assesses with high confidence that UNC6148 is Read More …