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.

Iranian-linked hackers are targeting Internet-exposed Rockwell/Allen-Bradley programmable logic controllers (PLCs) on the networks of U.S. critical infrastructure organizations. [...]

U.S. cyber agencies, the FBI, and NSA issued an urgent warning today about potential cyberattacks from Iranian-affiliated hackers targeting U.S. critical infrastructure. [...]

U.S. cybersecurity and intelligence agencies have issued a joint advisory warning of potential cyber-attacks from Iranian state-sponsored or affiliated threat actors.  "Over the past several months, there has been increasing activity from hacktivists and Iranian government-affiliated actors, which is expected to escalate due to recent events," the agencies said

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.

The DHS warned of a heightened risk of cyber and physical attacks on US targets by Iran in retaliation for strikes on Iranian nuclear facilities over the weekend

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.

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.

There's a war on and critical infrastructure operators are still using default passwords Iran-linked cyber thugs have exploited Israeli-made programmable logic controllers (PLCs) used in "multiple" water systems and other operational technology environments at facilities across the US, according to multiple law enforcement agencies .…