Latest cybersecurity reporting from selected sources.

The Iranian state-sponsored threat actor known as Nimbus Manticore (aka Screening Serpens and UNC1549) has been attributed to a fresh campaign using lures impersonating organizations in the aviation and software sectors across the U.S., Europe, and the Middle East following the joint U.S.-Israeli military campaign against the country in late February 2026

Iranian government hackers are launching disruptive cyberattacks on American energy and water infrastructure, U.S. government agencies “urgently” warned Tuesday. The hackers are taking aim at devices and systems that control industrial processes, and have harmed victims in the last month following the onset of U.S.-Israel strikes against Iran, according to the joint alert from the […] The post Iranian hackers launching disruptive attacks at U.S. energy, water targets, feds warn appeared first on CyberScoop.

The list of countries exploiting Internet-connected cameras to give them eyes inside their adversaries' borders continues to expand. What should companies look out for?

Also: CISA Protocol Concerns, AI Agents Push Past Cybersecurity ControlsIn this week's panel, four ISMG editors unpacked the cyber dimensions of the Stryker attack amid the escalating Iran-Israel-U.S. tensions, the growing controversy around CISA leadership and alleged protocol breaches, and a new set of concerns related to AI agents bypassing security controls.

Also: the Pentagon-Anthropic AI Legal Showdown, the New Reality of Document FraudIn this week's panel, four ISMG editors discuss the cyber activity tied to the U.S.-Israel-Iran conflict, the Pentagon's standoff with AI firm Anthropic and a new report that reveals how document fraud reflects deeper weaknesses in verification systems.

It’s been difficult early on to separate signal from noise, even if the attack on the medical device maker looks like a qualified success for the attackers. The post Stryker attack highlights nebulous nature of Iranian cyber activity amid joint U.S.-Israel conflict appeared first on CyberScoop.

Tehran-Linked Handala Hackers Disrupt Medtech Giant Stryker, Claim Verifone BreachAs the United States and Israel continue their war with Iran, Tehran-linked hacking group Handala has entered the fray, claiming credit for wiping systems at medical technology firm Stryker, which confirmed the attack, as well as breaching payment device maker Verifone, which denied being breached.

Experts Urge Preparedness, Nonstop Vigilance, See Ongoing Risk of Online ReprisalsSeven days into the United States and Israel continuing "major combat operations" against Iran, Tehran continues to respond with kinetic attacks against neighboring countries. While no cyberattacks have emerged, experts see unpredictability and continue to urge caution, monitoring and preparedness.

Also: Anthropic Claude Code Security Impact on AppSec, RSAC Conference PreviewIn this week's panel, four ISMG editors discuss the potential cyber spillover from escalating tensions in the Iran-Israel-U.S. conflict, the market disruption sparked by Anthropic's Claude Code Security launch and a preview of RSAC Conference 2026.

New research from Broadcom's Symantec and Carbon Black Threat Hunter Team has discovered evidence of an Iranian hacking group embedding itself in several U.S. companies' networks, including banks, airports, non-profit, and the Israeli arm of a software company

Separately, Iran Tied to IP Camera Hacks for Targeting and Battle Damage AssessmentU.S. military cyber operations underpinned the first part of the country's joint strike with Israel against Iran on Saturday. Since then, experts see signs of at least low-level cyber operations to support intelligence-gathering for kinetic attack targeting.

Cybersecurity researchers have warned of a surge in retaliatory hacktivist activity following the U.S.-Israel coordinated military campaign against Iran, codenamed Epic Fury and Roaring Lion

Iranian Cyberespionage Group MuddyWater Goes DarkPhysical effects rather than cyber strikes are triggering Middle Eastern connectivity problems during day four of a sustained U.S. and Israeli bombing campaign against Iran. Iran is responding with drone and missile attacks targeting U.S. military as well as British bases in Bahrain, Cyprus.

Nation-State Hackers Sheltering From Bombs or Cut Off From InternetIranian cyber proxies are girding for revenge while nation-state hackers in Tehran have gone quiet, whether to shelter from an onslaught of missile attacks or because the Middle Eastern country remains disconnected from the global internet on the third day of a U.S. and Israeli bombing campaign.

Experts Warn of DDoS, Ransomware, Proxy And Other Attacks on Health SectorThe escalating conflict emerging from the U.S. and Israel military strikes this weekend on Iran, which killed the country's top leadership and crippled its internet connectivity, could erupt into cyberattacks against the healthcare sector by Iranian sympathizers and proxies, experts warn.

US and Israel May Have Launched 'Largest Cyberattack in History' Against TehranOrganizations across the West and allied nations should prepare for Iranian cyberattacks in the wake of Israeli and U.S. ongoing strikes, threat intelligence firms warned as the first signs of the Iranian cyber counteroffensive became clear on Sunday

Trump Calls for Regime Change as Countries Declare War, Launch Missile StrikesU.S. President Donald Trump announced the launch of "major combat operations in Iran," in coordination with Israel, as he called for regime change in Tehran over the country's nuclear ambitions. Beyond already launched missile attacks, cybersecurity experts predict online reprisals.

A never-before-seen threat activity cluster codenamed UNK_SmudgedSerpent has been attributed as behind a set of cyber attacks targeting academics and foreign policy experts between June and August 2025, coinciding with heightened geopolitical tensions between Iran and Israel

An Iranian-backed ransomware-as-a-service (RaaS) named Pay2Key has resurfaced in the wake of the Israel-Iran-U.S. conflict last month, offering bigger payouts to cybercriminals who launch attacks against Israel and the U.S

Geopolitical Conflict Involving Iran, Israel, US Ripe for Attacks on SectorGovernment authorities are warning of increased risk of Iranian cyber and related threats against healthcare and public health sector organizations - including ransomware, distributed denial-of-service and other attacks related to that nation's escalated conflicts with Israel and the U.S.