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Cybersecurity

Joint Cybersecurity Advisory – Conti Ransomware

The Cybersecurity and Infrastructure Security Agency (CISA), along with the FBI, the National Security Agency (NSA), and the United States Secret Service (USSS) have re-released a joint Cybersecurity Advisory on Conti ransomware. The advisory was updated to include indicators of compromise. It also notes that Conti threat actors remain active and reported Conti ransomware attacks against U.S. and international entities have grown to more than 1,000. The advisory also contains mitigation measures to reduce the risk of compromise by Conti ransomware. \

Mitel MiCollab and MiVoice Business Express Applications Exploited for DDoS Amplification Attacks

In a recent Cloudflare blogpost, security researchers from multiple companies warn of a new DDoS attack method they have named TP240PhoneHome. This method utilizes vulnerable versions of the Mitel MiCollab and MiVoice Business Express communications systems, which are largely employed by government and private sector organizations. The TP240PhoneHome method was first observed utilized for DDoS attacks on February 18.

China’s APT41 Successfully Compromises Applications Used By At Least Six U.S. State Governments

In a recent blog post by Mandiant, security researchers detail techniques used by the Chinese state-sponsored threat actor APT41 against the government networks of multiple U.S. states between the months of May 2021 and February 2022. During this period, the company observed the use of various zero day vulnerabilities, including the notorious Log4j vulnerability, to successfully compromise applications used by at least six states.

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