While most end users are well-acquainted with the dangers of traditional phishing attacks, such as those delivered via email or other media, a large proportion are likely unaware that Microsoft Teams chats could be a phishing vector. Most Teams activity is intra-organizational, but Microsoft enables External Access by default, which allows members of one organization to add users outside the organization to their Teams chats. Perhaps predictably, this feature has provided malicious actors a new avenue by which to exploit untrained or unaware users.

AT&T Alien Labs has discovered a new malware targeting endpoints and IoT devices that are running Linux operating systems. Shikitega is delivered in a multistage infection chain where each module responds to a part of the payload and downloads and executes the next one. An attacker can gain full control of the system, in addition to the cryptocurrency miner that will be executed and set to persist.