Latest cybersecurity reporting from selected sources.

CISA: Iran-Linked Groups Actively Exploiting OT Exposure Risks, PLC ProgrammersFederal agencies are warning that Iranian-linked actors have begun actively exploiting internet-facing PLCs and misconfigured OT systems across U.S. critical infrastructure, enabling network access, lateral movement and potential disruption amid rising geopolitical tensions.

Medtech Maker Is Still Recovering While Iranian Hackers Threaten More Attack VictimsAs medtech maker Stryker continues working to restore global IT systems brought offline by a cyberattack last week, class action lawsuits against the company are piling up in federal court and the Iranian hackers claiming credit for the attack are warning of more assaults to come on other victims.

2 More Vulnerabilities Need Patching in React Server Components, Warns VercelMass exploitation of the "React2Shell" - CVE-2025-55182 - vulnerability remains underway by nation-state hackers tied to China, North Korea and Iran, as well as financially motivated cybercriminals running everything from cryptomining malware to DDoS services, security experts warn.

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.

Iranian OT Hacking Team Has Gone Quiet … Too QuietArmed exchanges between Iran and Israel and the prospect of U.S. armed intervention against Tehran has cyber defenders warning about hacking risks to critical infrastructure. Iran's CyberAv3ngers doesn't possess the sophistication of Chinese or Russian actors but it's still a persistent threat.

Analysts Warn US Infrastructure May Be Next as Iran Plans Missile Strike ResponseIsrael’s strike on Iranian military and nuclear targets has triggered fears of retaliatory cyberattacks, with analysts warning that Tehran may escalate disruptions against U.S. and Israeli critical infrastructure through proxy campaigns, brute-force attacks or coordinated DDoS strikes.

Threat Groups Are Mapping OT Networks for Future Targeting, Warns DragosA China-linked threat group called Voltzite is targeting operational technology systems at critical infrastructure organizations worldwide to steal network diagrams, OT operating instructions and information about geographic information systems, said cybersecurity firm Dragos.

Russia, China, Iran and North Korea Tapping Cybercrime Services, Google SaysThe cybercrime-as-a-service economy continues to power ransomware and other criminal enterprises, as well as serve as "an accelerant for state-sponsored hacking," collectively posing an increasing risk to Western national security, cybersecurity researchers warn.

Advisory Warns Iranian Threat Actors Use 'Push Bombing' to Target Critical SectorsIranian cyber actors are increasingly using brute force techniques, such as password spraying and multifactor authentication push bombing, to target critical infrastructure sectors, according to a cybersecurity advisory released Wednesday by the Cybersecurity and Infrastructure Security Agency.

Russia, Iran and China Investing in Cyber Ops, Warns MI5 Director Ken McCallumNation-state actors are investing aggressively in advanced cyber operations to target government information and technology in a bid to sow "mayhem on British and European streets," warned a top British intelligence official. Russia, Iran and China are using proxies and hacking agencies.

Report: North Korean, Russian, Chinese, Iranian Actors Are Targeting Research OrgsRussian state hackers are targeting think tanks studying strategic interests and the defense sector, warned the French cyber agency. A hacking group that officially is Unit 26165 of the Russian Main Intelligence Directorate appears to be Russia's most prolific targeter of think tanks.

New Reports and Joint Advisory Warn of Growing Cybersecurity Threats Linked to IranA joint advisory from the FBI and Cybersecurity and Infrastructure Security Agency, as well as reports published Wednesday by Microsoft and the Google-owned cybersecurity firm Mandiant, are all warning of emerging cybersecurity threats associated with the Iranian regime.