(U//FOUO) NCTC Counterterrorism Weekly: August 31 – September 6, 2023

Remaining Vigilant for the 22nd Anniversary of the 9/11 Attacks

National Insider Threat Awareness Month 2023: Bystander Engagement

Hurricane Lee Strengthens in the Atlantic, Followed by Another Developing System

Water and Wastewater Sector Regional Threat Briefings – September 10 Deadline

Incident Report: DocuSign Impersonated Email Leads to Utility’s Spoofed Login Portal

CISA ICS Vulnerability Advisories and Alerts, Updates, and Bulletins – September 7, 2023

CISA Releases Update to Threat Actors Exploiting Citrix CVE-2023-3519 to Implant Webshells

CISA Releases Capacity Enhancement Guide to Strengthen Agency Resilience to DDoS Attack

W3LL: Mature, Phishing-Focused Underground Marketplace Uncovered by Researchers

Intense Heat Events Will Continue to Rise, Outdoor Workers and Vulnerable Populations at Risk

Supplemental Cyber Highlights – September 7, 2023