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Why OT Security Comes Down to Risk Tolerance, Not Perfect Defense
Securing OT networks isn't about eliminating risk. It's about managing it strategically. Learn how a three-pillar framework of risk assessment, tolerance and acceptance, paired with a phased approach to microsegmentation, can turn an overwhelming challenge into a manageable journey.

Signature Healthcare EHRs, Patient Portal Offline; Some Cancer Care Cancelled
A Massachusetts healthcare system is diverting ambulance patients and is operating under downtime procedures as it deals with a cyberattack. The organization has also canceled certain cancer treatments, taken its patient portal offline and is unable to fill prescriptions at its retail pharmacies.

James Foster Points to Agentic Security and Need for Customers to Outsource Defense
CEO James Foster says managed detection and response is evolving into an AI-powered agentic model as enterprises face faster AI-driven threats. He stresses balancing automation with human expertise while positioning eSentire as a vendor-neutral platform integrating best-of-breed security tools.

CISA: Iran-Linked Groups Actively Exploiting OT Exposure Risks, PLC Programmers
Federal 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.

Anthropic Limits Access to New AI Model Amid Concerns Over Misuse
Anthropic asserted Tuesday that it's created a new era for cybersecurity after developing an artificial intelligence model too dangerous to release to public. The company's unreleased Claude Mythos Preview model has already found thousands of high-severity vulnerabilities.

Researchers Find Frontier Models Defy Humans to Protect AI Peers
Artificial intelligence systems will lie, falsify records and sabotage company systems to prevent their fellow models from being shut down - even when no one told them to care. Researchers at the University of California Berkeley and Santa Cruz campuses dub the behavior "peer-preservation."

Internet Intelligence Platform Targets Real-Time Cybethreat Defense
Censys raised $70 million to expand its AI-driven cybersecurity platform, focusing on real-time visibility into internet infrastructure. Co-founder and CEO Zakir Durumeric said faster attacks and evolving tactics require automated defenses powered by high-quality data and global intelligence.

White House Criticizes Cyber Defense Agency - and Proposes a Steep $700 Million Cut
The FY2027 proposal would cut roughly $707 million from CISA, reducing staffing, contractor support and coordination programs while shifting the agency toward a narrower focus on federal networks and critical infrastructure amid rising nation-state cyberthreats.

Vendor Issues Hotfix for Critical Flaw in FortiClient Endpoint Management Server
Fortinet's endpoint management security server software is under fire from attackers, who are actively targeting two critical flaws, including a fresh zero-day that facilitates unauthenticated remote code or command execution. The vendor has issued a hotfix and promised a full patch.

After Hacker Site Gets Resurrected, Cybercrime Group Denies All Involvement
Drama continues fast and furious in BreachForums land, as someone claiming to be part of the ShinyHunters crime group said they've rebooted the long-running and oft-disrupted forum yet again. But an official ShinyHunters channel denied the group having involvement in any such reboots.

Group Resurrects Hacker Site Despite Multiple Law Enforcement Disruptions
Drama continues to come fast and furious in BreachForums land, as the ShinyHunters group announced that it's rebooted the long-running and oft-disrupted forum yet again, just weeks after it got hacked and its databases dumped, leading the previous admin to allegedly exit scam and steal $4,000.

Market Pressures Are Rewarding Storytelling More Than Validation, Operational Value
The fall of health tech company Theranos exposed how hype can outpace reality. In cybersecurity, similar pressures are emerging as vendors compete with bold claims and buyers struggle to verify outcomes. The result: a market where narrative can overshadow measurable operational value.

AI Dependency Attack Reportedly Exposes Data and Source Code
A LiteLLM supply-chain compromise enabled attackers to harvest credentials and access internal environments at scale at Mercor. The firm was the first to confirm a LiteLLM breach, and researchers are warning about growing AI system exposure and limited visibility.

Report Reveals Growing Trend of Fraudsters Intercepting SMS-Based Verification
Financial institutions have historically relied on one-time passcodes as a primary authentication control for their accountholders. But OTP verification is less reliable as fraudsters increasingly exploit SMS-based verification weaknesses to carry out account takeover and payment fraud schemes.

It's Time for CIOs to Rethink Business Continuity Plans and Cloud Resources
The targeting of commercial cloud data centers in the Middle East marks a turning point for CIOs and enterprise leaders. Geopolitics and military conflicts are definite threats to vital technology infrastructure. The question is: How well-prepared and resilient is your enterprise?

Device Maker Is Still Investigating March 11 Attack Claimed by Iranian Hacktivists
Medical tech maker Stryker said it has restored its systems and is operational across its global manufacturing network three weeks after a wiper attack by Iranian hacktivist group Handala led to a worldwide outage at the company. The firm is continuing to investigate the incident.

Also: RSAC Speakers Warn AI Is Outpacing Security, DoD's Zero Trust Reality Check
In this week's panel, four ISMG editors discussed growing cyber risks in healthcare following recent vendor breaches, key takeaways from RSAC Conference and whether the Pentagon's zero trust push is delivering real security benefits or just checking off boxes.