The US-CERT Current Activity web page is a regularly updated summary of the most frequent, high-impact types of security incidents currently being reported to the US-CERT.

Cisco Releases Security Updates for Multiple Products

Cisco has released security updates to address vulnerabilities in multiple Cisco products. A remote attacker could exploit one of these vulnerabilities to take obtain sensitive information.

The Cybersecurity and Infrastructure Security Agency (CISA) encourages users and administrators to review the following Cisco Advisories and apply the necessary updates:

NSA Releases Guidance on Limiting Location Data Exposure

The National Security Agency (NSA) has released an information sheet with guidance on how to limit location data exposure for National Security System (NSS) / Department of Defense (DoD) system users, as well as the general public. NSA outlines mobile device geolocation services and provides recommendations on how to prevent the exposure of sensitive location information and reduce the amount of location data shared.  

FBI Reports Increase in Online Shopping Scams

The Federal Bureau of Investigation (FBI) Internet Crime Complaint Center (I3C) has released an alert on a recent increase in online shopping scams. The scams direct victims to fraudulent websites via ads on social media platforms and popular online search engines’ shopping pages.

Chinese Malicious Cyber Activity

The Cybersecurity and Infrastructure Security Agency (CISA), the Federal Bureau of Investigation (FBI), and the Department of Defense (DoD) have identified a malware variant—referred as TAIDOOR—used by the Chinese government. In addition, U.S. Cyber Command has released the malware sample to the malware aggregation tool and repository, VirusTotal.

Cisco Releases Security Updates for Multiple Products

Cisco has released security updates to address vulnerabilities affecting multiple products. An unauthenticated, remote attacker could exploit some of these vulnerabilities to take control of an affected system.

The Cybersecurity and Infrastructure Security Agency (CISA) encourages users and administrators to review the following Cisco Advisories and apply the necessary updates. For updates addressing lower severity vulnerabilities, see the Cisco Security Advisories page.

GNU GRUB2 Vulnerability

Free Software Foundation GNU Project's multiboot boot loader, GNU GRUB2, contains a vulnerability—CVE-2020-10713—that a local attacker could exploit to take control of an affected system.