Cyber Warfare

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A North Korean national flag on a tall metal structure waving high above all other buildings in Gijungdong as seen from an observation post on September 28, 2017 in Panmunjom, South Korea.

Cyber, Sovereignty, and North Korea–And the Risk of Inaction

Americans, and people throughout the world, are becoming increasingly aware that there are significant vulnerabilities in the Internet, and that there are malicious actors who…
Locks on $100 bill with an internet browser overlaid.

Protecting Financial Data in Cyberspace: Precedent for Further Progress on Cyber Norms?

Identifying the legal norms that apply in cyberspace remains highly challenging. The recent collapse of the 5th UN Group of Governmental Experts (GGE) on Developments in the Field…

International Cyber Law Politicized: The UN GGE’s Failure to Advance Cyber Norms

On June 23, after years of slow yet meaningful progress in developing State consensus regarding the application of international law norms to cyberspace, the UN Group of Governmental…
Military personnel crowd around a laptop.

Why a Broad Definition of “Violence” in Cyber Conflict is Unwise and Legally Unsound

International Humanitarian Law (IHL, aka the Law of Armed Conflict) is not intended to outlaw conflict.  It is meant to regulate conflict in order to reduce its impact on civilians…
: A laptop computer displays a message as U.S. Army General Dan McNeill, Coalition Joint Task Force (CJTF) 180 commander, speaks to the news media inside the recently constructed CJTF-180 Joint Operations Center May 29, 2002 at Bagram airbase in Afghanistan.

Violence in Cyberspace: Are Disruptive Cyberspace Operations Legal under International Humanitarian Law?

It is already widely acknowledged that cyberspace has become the fifth domain of warfare, and militaries around the world are training various cyber units, who will be supporting…

Tallinn Manual 2.0 – Advancing the Conversation

On Wednesday last week I had the privilege of attending the Washington, D.C. launch of the Tallinn Manual 2.0 on the International Law Applicable to Cyber Operations at the Atlantic…
Two hands type on a keyboard. The screen shows blue lettering on a dark background.

Watch the Tallinn Manual 2.0 Launch Discussion Online

Today marks the launch of Tallinn Manual 2.0, a key text on how existing international law applies to cyber operations. It was authored by 19 international law experts, and Just…

International Law and the US Response to Russian Election Interference

On Thursday, Senator McCain will hold hearings of the Armed Services Committee on the Russian election hacking. Several aspects of Russia’s election interference raise issues…
Just Security

US Transparency Regarding International Law in Cyberspace

Last Thursday, State Department Legal Adviser Brian Egan, delivered an important speech at Berkeley Law School on the relationship between international law and cyber activities. …

International Law and Proposed U.S. Responses to the D.N.C. Hack

In a short essay in Foreign Policy, retired Admiral James Stavridis addresses recent election season cyber operations against the Democratic National Party that the U.S. has attributed…
Just Security

A 9/11 Commission Approach to the Russian Hack of the DNC

This post is the latest installment of our “Monday Reflections” feature, in which a different Just Security editor examines the big stories from the previous week or looks…
Just Security

Cybersecurity, Elections, and Critical Infrastructure at Home and Abroad

In the last few days, Secretary of Homeland Security Jeh Johnson and Homeland Security Advisor Lisa Monaco have both suggested that in the wake of the DNC hack, the United States…
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