Author Archives: CSIRT

Locked Shields 2021 largest cyber defense exercise worldwide

This year’s high-level cyber security Exercise Locked Shields is the largest of its kind, organizers, the Tallinn-based NATO Cooperative Cyber Defense Center of Excellence (CCDCOE), have announced. Under a new format for 2021, this year’s event will be the largest global live-fire cyber defense exercise worldwide, the CCDCOE says, and will aim to highlight the […]

Critical vulnerabilities in Microsoft Edge Chromium and Google Chrome browsers

Vulnerability detected (CVE-2021-21193) on Chromium Blink Engine that allows malicious users to execute arbitrary code, gain unauthorized access, access sensitive information, or deny service (denial -of-service). Microsoft and Google have published the following versions to patch these exploited vulnerabilities: • Edge Chromium 89.0.774.54 • Google Chrome 89.0.4389.90 More information can be found at https://securityaffairs.co/wordpress/115600/security/google-chrome-0-day.html Source: […]

Active Exploitation of Multiple Zero-Day Microsoft Exchange Vulnerabilities

Abnormal activity on Microsoft Exchange servers was detected in January 2021. In particular, an attacker exploiting a manually compromised vulnerability (SSRF) on Microsoft Exchange servers (CVE-2021-26855) could steal the full contents of a single user mailbox. This vulnerability can be exploited remotely and does not require authentication of any kind, nor does it require special […]

Microsoft Releases Queries for SolarWinds Attack Detection

Microsoft is making available the CodeQL queries it used to detect malicious implants in the massive supply chain attack that affected SolarWinds, tech firms and government agencies. The CodeQL queries, written in C# language, are now available in the GitHub repository. They help in ruling out the presence of the code-level indicators of compromise. “There […]