The Cybersecurity and Infrastructure Security Agency (CISA), the Federal Bureau of Investigation (FBI), and international cyber agencies have jointly issued a cybersecurity advisory detailing the evolving threats posed by the cybercriminal group known as Scattered Spider, also referred to as UNC3944, Oktapus, Octo Tempest, and other aliases. This group is known for targeting large corporations, often gaining access through compromised Information Technology (IT) help desks. Scattered Spider continues to escalate its use of advanced social engineering tactics, including SIM-swapping and phishing-resistant multi-factor authentication (MFA) circumvention. Recent investigations reveal the use of increasingly sophisticated malware such as RattyRAT and DragonForce ransomware, along with legitimate remote access tools like AnyDesk, TeamViewer, and Teleport.sh, which help the group maintain persistence and avoid detection. Their operations typically involve data exfiltration for extortion, followed by encryption of systems for ransom, with stolen data often uploaded to platforms such as MEGA and Amazon S3. The advisory also notes the group’s reliance on living-off-the-land techniques and frequent changes in tactics to evade detection. Organizations are strongly urged to maintain offline backups, enforce phishing-resistant MFA, and implement strict application controls to reduce risk and limit the impact of potential intrusions. For additional resources and technical details, refer to the Scattered Spider cybersecurity advisory.