Scattered Spider [1] [2] [3] [4] [5] [6] [7], also known as UNC3944 [2], Scatter Swine [1] [2] [3] [4] [5] [6] [7], and Octo Tempest [2], is an English-speaking cybercriminal group that poses a significant threat due to their precision attacks and aggressive tactics, including threats of violence [2]. They have recently formed a partnership with the ALPHV/Black Cat ransomware gang, as identified by the FBI and CISA in a joint advisory.


Scattered Spider specializes in social engineering techniques for initial access, targeting large enterprises through their cloud service providers [1] [5]. They exploit third-party service environments and stolen credentials to breach on-premise networks within an hour. To bypass multi-factor authentication [5], they employ socially-engineered MFA fatigue attacks [5]. Once inside an enterprise environment, they hijack Citrix sessions [5], create privileged user accounts [5], and encrypt and exfiltrate data using the Blackcat/ALPHV ransomware. Despite law enforcement efforts, Scattered Spider’s activities remain undisturbed.


To defend against Scattered Spider, organizations should maintain offline backups of data [6], enforce phishing-resistant multifactor authentication [6], and implement application controls for software execution [6]. Additionally, enterprises should adhere to the principle of least privilege [5], restrict super administrator roles [5], and implement rigorous policies for help-desk procedures [5]. Constant vigilance [5], strengthening security protocols [5], and staying informed about emerging threats are essential for enterprise defense [5]. The impact of Scattered Spider’s activities is significant, and organizations must take proactive measures to mitigate the threat they pose.