No malware crew linked to this latest red-teaming tool yet Attackers are using Splinter, a new post-exploitation tool, to wreak havoc in victims' IT environments after initial infiltration, utilizing capabilities such as executing Windows commands, stealing files, collecting cloud service account info, and downloading additional malware onto victims' systems....

TL;DR: Attackers will break in and pwn you, as a US government red team demonstrated The US Cybersecurity and Infrastructure Agency often breaks into critical organizations' networks - with their permission, of course - to simulate real-world cyber attacks and thereby help improve their security. In one of those recent exercises conducted at a critical infrastructure provider, the Agency exploited a web shell left behind from an earlier bug bounty program, scooped up a bunch of credentials and security keys, moved through the network and ultimately pwned the org's domain and several sensitive business system targets....