NXNSAttack technique can be abused for large-scale DDoS attacks

A team of academics from Israel has disclosed today details about NXNSAttack, a vulnerability in DNS servers that can be abused to launch DDoS attacks of massive proportions. According to the research team, NXNSAttack impacts recursive DNS servers and the process Read More …

Mirai and Hoaxcalls Botnets Target Legacy Symantec Web Gateways

As part of Unit 42’s efforts to proactively monitor threats circulating in the wild, I recently came across new Hoaxcalls and Mirai botnet campaigns targeting a post-authentication Remote Code Execution vulnerability in Symantec Secure Web Gateway 5.0.2.8, which is a Read More …

QNodeService: Node.js Trojan Spread via Covid-19 Lure

We recently noticed a Twitter post by MalwareHunterTeam that showed a Java downloader with a low detection rate. Its name, “Company PLP_Tax relief due to Covid-19 outbreak CI+PL.jar”, suggests it may have been used in a Covid-19-themed phishing campaign. Running this file Read More …

Thunderbolt flaws affect millions of computers – even locking unattended devices won’t help

A Dutch researcher has detailed nine attack scenarios that work against all computers with Thunderbolt shipped since 2011 and which allow an attacker with physical access to quickly steal data from encrypted drives and memory. Researcher Björn Ruytenberg detailed the Read More …