Cyber Security Alerts & Threat Intelligence

Original release date: January 15, 2021 The National Security Agency (NSA) has released an information sheet with guidance on adopting encrypted Domain Name System (DNS) over Hypertext Transfer Protocol over Transport Layer Security (HTTPS), referred to as DNS over HTTPS (DoH). When configured appropriately, strong enterprise DNS controls can help prevent many initial access, command and control, and exfiltration techniques used by threat actors. CISA encourages enterprise owners and administrators to review the NSA Info Sheet: Adopting Encrypted DNS in Enterprise Environments and consider implementing the recommendations to enhance DNS security. This product is provided subject to this Notification and this…

Security researchers lambasted the controversial macOS Big Sur feature for exposing users’ sensitive data.

Original release date: January 15, 2021 The Apache Software Foundation has released a security advisory to address a vulnerability affecting multiple versions of Apache Tomcat. An attacker could exploit this vulnerability to obtain sensitive information.    CISA encourages users and administrators to review the Apache security advisory for CVE-2021-24122 and upgrade to the appropriate version.   This product is provided subject to this Notification and this Privacy & Use policy.

CISA has issued an alert warning that cloud services at U.S. organizations are being actively and successfully targeted.

Original release date: January 14, 2021 Microsoft has released a security advisory to address a remote code execution vulnerability, CVE-2021-1647, in Microsoft Defender. A remote attacker can exploit this vulnerability to take control of an affected system. This vulnerability was detected in exploits in the wild. CISA encourages users and administrators to review Microsoft Advisory for CVE-2021-1647 and apply the necessary updates.  This product is provided subject to this Notification and this Privacy & Use policy.

The optional feature was released free to users in a technical preview this week, adding a new layer of security to service, which has been plagued by privacy concerns.

Cisco fixed high-severity flaws tied to 67 CVEs overall, including ones found inits AnyConnect Secure Mobility Client and in its RV110W, RV130, RV130W, and RV215W small business routers.

Two security vulnerabilities — one a privilege-escalation problem and the other a stored XSS bug — afflict a WordPress plugin with 40,000 installs.

Original release date: January 13, 2021 CISA is aware of several recent successful cyberattacks against various organizations’ cloud services. Threat actors used a variety of tactics and techniques, including phishing and brute force logins, to attempt to exploit weaknesses in cloud security practices. In response, CISA has released Analysis Report AR21-013A: Strengthening Security Configurations to Defend Against Attackers Targeting Cloud Services which provides technical details and indicators of compromise to help detect and respond to potential attacks. CISA encourages users and administrators to review AR21-013A and apply the recommendations to strengthen cloud environment configurations. This product is provided subject to this Notification…

On the heels of a cyberattack on the EMA, cybercriminals have now leaked Pfizer and BioNTech COVID-19 vaccine data on the internet.

Watering-hole attacks executed by ‘experts’ exploited Chrome, Windows and Android flaws and were carried out on two servers.

The first Patch Tuesday security bulletin for 2021 from Microsoft includes fixes for one bug under active attack, possibly linked to the massive SolarWinds hacks.