Defcon Alerts Threat Monitor

China's Great Firewall Temporarily Enforces HTTPS Traffic Block

Evaluations based on available data point to an internal cause, such as a setup error or a test of network controls, rather than outside interference.

Aug 27 • 

Defcon Level

8

April 2025

Cyber Analysis: U.S. Maritime Cybersecurity Threats From Foreign Adversarial Technologies

The recently released advisories address vulnerabilities in port equipment, networks, and navigation systems, emphasizing the risks posed by…

Apr 9 • 

Defcon Level

 and 

Donald Standeford

3

March 2025

GPS Interference Disrupts Navigation Near Bandar Jask, Iran

Corroborated reports from vessel masters indicate that the disruptions, which lasted several hours, impacted electronic navigation systems, including…

Mar 10 • 

Defcon Level

5

FBI/CISA Issue Urgent Warnings on Cyber Threats Targeting Corporations and Vulnerable Populations

CISA/FBI: "Urgent Alert: Criminals posing as "BianLian Group" are sending extortion letters to corporate execs, threatening to leak sensitive info…

Mar 6 • 

Defcon Level

5

January 2025

Satellite Transition Impacts Some AFN Customers in the Pacific

Customers in Southeast Asia, Australia, New Zealand, and Oceania will have to re-point their satellite dish to a new satellite and update their decoder…

Jan 23 • 

Defcon Level

3

December 2024

Joint US, Israeli "Cyberdome IX" Exercise In United States Concludes

The cyber-defense exercise was conducted jointly by the U.S. Cyber Command, together with the Israel Defense Forces' J6 and Cyber Defense Directorate…

Dec 24, 2024 • 

Defcon Level

2

November 2024

Chinese-Backed Salt Typhoon Botnet Attacks Critical US Infrastructure, Volt Typhoon Adapts, Resurfaces Globally

Volt Typhoon, which embedded itself into end-of-life routers and critical infrastructure for at least five years has resurfaced globally and adapted…

Nov 16, 2024 • 

Defcon Level

 and 

Donald Standeford

6

Seoul: North Korea To Blame For 331 GPS Disruptions So Far This Month

Despite the GPS disruptions, the ministry said that there were no major issues or damages caused by the interference.

Nov 11, 2024 • 

Defcon Level

4

October 2024

Reports That Nearly All Three Branches Of Iranian Government, Including Nuclear Facilities Hit With Cyberattacks

The source did not say when the attacks occurred, so the attacks could be recent or have happened sometime back.

Oct 11, 2024 • 

Defcon Level

 and 

Donald Standeford

7

Reports Of Outages At Bank Of America - Some Users Have Zero Balance Or Can't Login

Down Detector shows that Bank of America has recently begun to have service interruptions.

Oct 2, 2024 • 

Defcon Level

7

July 2024

Services Affected Worldwide Traced To Microsoft And A CrowdStrike Update

An update is reported to have affected Windows operating systems globally, with many systems showing a "Blue Screen of Death" or BSOD on systems…

Jul 19, 2024 • 

Defcon Level

2

May 2024

Internet Archive Hit With DDoS Cyberattack

The Internet Archive has come under a distributed denial of service (DDoS) attack, according to the archive, which reported services are back online.

May 27, 2024 • 

Defcon Level

2