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The Cipher Brief: National Security news, analysis and expert commentary.

Iran's Digital War Machine Targeting U.S. Infrastructure

Despite strikes on Iranian command centers, Tehran’s cyber operators continue targeting U.S. healthcare, energy, water, and government systems through dispersed networks and proxy groups.

Cybersecurity Photo Illustrations

The first missile strikes hadn’t even cooled before Iranian-linked hackers were moving. When the U.S. and Israel launched military operations against [...] More

Open Source Report logo

The Open Source Report

Cuban President Raul Castro, next to his grandson and bodyguard, Raul Rodriguez Castro, attends the May Day parade at Revolution Square of Havana, on May 1, 2017. At left, / AFP PHOTO / ADALBERTO ROQUE (Photo credit should read ADALBERTO ROQUE/AFP via Getty Images)

Global Intelligence Report for Thursday, May 21, 2026

U.S. raises pressure on Cuba by indicting former President Raúl Castro

Trump and Netanyahu diverge on Iran war’s future in tense phone call

Iran is consolidating control of Hormuz with island checkpoints, diplomatic deals, and ‘fees’

Trump says he’ll speak to Taiwan’s Lai amid arms deal talks, departing from long-time diplomatic norms

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Expert Insights

Cipher Brief Experts bring context to today’s global events

A Tale of Two Straits: Sweden and Denmark are in a Position of Power Over Russia

Joey Gagnard
Nils Alstad

Two straits, six thousand kilometers apart, are defining the global balance of power in 2026. The first, Hormuz, is closed by force and heavily impacting the world economy. The second, the Øresund, is open, and through it [...] More

Intelligence at the Speed of Relevance: Rethinking the Intelligence Cycle for the AI Era

Geof Kahn

OPINION — There’s a profound assumption embedded in much of today’s conversation about AI and intelligence: better technology will solve our core problems. We need new infrastructure, better models, and faster [...] More

News & Analysis

CHINA-RUSSIA-IRAN-DIPLOMACY

Moscow and Beijing’s shadow war: How Russia and China are keeping Iran lethal

The ceasefire between the United States and Iran is barely holding. Pakistani mediators are still shuttling between capitals, fighting has flared in [...] More

Opinion

Proscribing the IRGC Will Make Britain Safer

The United Kingdom must act to proscribe Iran’s Islamic Revolutionary Guard Corps, or IRGC, before it’s too late. The IRGC must be proscribed before [...] More

What’s on The Cipher Brief’s Digital Channel

Book Reviews

NOT EXACTLY ETERNAL JOY: The ping-pong defense didn't work. On May 3rd when Dead Drop last checked in on Lu Jianwang, AKA: "Harry Lu," he was on trial in Brooklyn federal court. His attorney was arguing that the six-story Chinatown building he ran was just a spot for Chinese diaspora members to renew their driver's licenses and play mahjong and table tennis. But a jury decided otherwise and convicted him of acting as an unregistered agent of the Chinese government. They also convicted him of obstruction of justice for deleting WeChat messages that prosecutors said contained orders from Beijing to silence and harass [...] More

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Events

Live Events

2026 Threat Conference

2026 Threat Conference

The Cipher Brief Threat Conference is the nation’s premier forum for non-partisan discussion of global threats and solutions as well as high-level [...] More

Upcoming: 25 October, 2026

Podcasts

State Secrets

Former Australian Signals Directorate Director-General Rachel Noble joins State Secrets with Suzanne Kelly for a rare insider’s look at the cyber battles shaping modern national security. From China’s targeting of critical infrastructure to Russia, Iran, AI-enabled threats, offensive cyber operations and the power of the Five Eyes alliance, Noble explains why the next conflict may already be underway - inside our networks.

In this episode:

  • Why the Australian Signals Directorate is one of the Five Eyes’ most important cyber and intelligence partners
  • How China is pre-positioning inside critical infrastructure and telecommunications networks
  • Why cyber criminals and state-backed actors are increasingly blurring together
  • What Russia, Iran and China are teaching the world about cyber conflict
  • How AI is accelerating both cyber defense and cyber offense
  • Why private sector companies may now be the first line of defense in modern conflict
  • What citizens can do to strengthen national cyber resilience
  • Why intelligence agencies need to better explain their mission to the public

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