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.

Individual Vulnerability Severity Not Always a Good Measure of Risk ExposureA mainstay of IT security programs across the world, the Common Vulnerability Scoring System, may have terminal flaws when applied to the mirror universe of operational technology - a place where ordinary assumptions about risk don't apply.

ManuSec Canada Speakers From Subaru and Toronto Transit Discuss Cyber ResilienceCanadian manufacturers face rising cyber risk as IT and OT systems converge. Leaders from Subaru Canada and the Toronto Transit Commission outline how ransomware, supply chain exposure and legacy OT vulnerabilities demand stronger resilience, segmentation and incident response readiness.

Joint US, UK and Five Eyes Guidance Flags OT Exposure as National RiskU.S. and allied cyber agencies issued new guidance warning that insecure operational technology connectivity - driven by remote access, third-party vendors and IT integration - remains a major threat vector, enabling cyber intrusions to escalate into physical disruptions.

Acquisition Streamlines Security Operations From Asset Discovery to RemediationAI software company ServiceNow has entered into an agreement to buy cyber exposure management and security company Armis for $7.75 billion in cash. The deal will bolster ServiceNow's cybersecurity offerings at a time when many larger technology vendors are choosing to expand their security portfolios.

CEO Yevgeny Dibrov Says Otorio Acquisition Positions Armis for Strong GrowthArmis CEO Yevgeny Dibrov outlines how the Otorio acquisition is driving OT security advances, enabling on-prem deployments and secure remote access. He also details AI's role in defense, Nvidia collaborations and upcoming products to expand the cyber exposure management suite.

Series D Funding on $4.2B Valuation to Support OT, Medical Device Security GrowthArmis has closed a $200 million Series D funding round on a $4.2 billion valuation to drive growth in cyber exposure management with a focus on acquisitions and federal expansion. CEO Yevgeny Dibrov says the funds will accelerate Armis' work in operational technology and medical device security.

Cyberattack on Aliquippa Water Plant Highlights Vulnerabilities in OT SystemsThe onset of war between Israel and Hamas led to a spike in cyberattacks against operational technology, says Microsoft in a warning to critical infrastructure operators about the dangers of internet-exposed operational technology.

Cyber Authorities Warn Pro-Russian Hacktivists Targeting Small-Scale OT SystemsU.S. and international cyber authorities issued a warning Wednesday that pro-Russian hacktivists are increasingly targeting small-scale operational technology systems throughout North America and Europe that have been left vulnerable to attacks due to internet-exposed industrial control systems.