All news with #ot security tag

🔒 The Five Eyes’ CI Fortify guidance urges critical infrastructure operators to be able to isolate operational technology deliberately and sustain services during a crisis. The advisory rates VLANs and MPLS as insufficient long-term segregation and cautions against trusting carrier services or native OT encryption. It warns that software-defined controls are convenient but not equivalent to physical separation, and that isolation introduces its own operational risks requiring planning and testing.

🚨 The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has issued an urgent alert after hackers disrupted over 30 Minnesota community water systems by targeting internet-exposed programmable logic controllers (PLCs). The attacks included password changes that locked operators out, IP alterations that severed internet connectivity, and other actions that impaired operations. CISA urges owners and operators to remove publicly exposed PLCs and OT from the internet, use VPNs or gateway devices for access, change default passwords, and implement IP allow-lists. Security vendor research from Censys found thousands of internet-reachable PLC hosts and highlighted undocumented cellular modems as a common blind spot.

🔒 A coordinated cyberattack targeted more than 30 Minnesota community water systems over July 26–27, prompting temporary operational shutdowns and local emergency responses while officials reported drinking water remained safe. Security researchers link the campaign to a months-long surge in attacks on water infrastructure and note potential ties to exposed PLCs, including Rockwell Automation MicroLogix 1400 controllers. Federal agencies urged utilities to remove internet-exposed operational technology and follow mitigation guidance as investigations continue.

🔒 A coordinated cyberattack impacted operational technology at more than 30 Minnesota community water systems on July 26–27, prompting a statewide cybersecurity response. Several municipalities, including Braham, Plymouth, South St. Paul and Maple Plain, reported outages, communications failures or affected automated controls, with Maple Plain declaring a local emergency. Minnesota IT Services (MNIT) and federal partners are investigating, sharing intelligence and working to contain and recover systems while attribution and technical details remain under investigation.

🔒 New joint guidance from U.S. and Australian cybersecurity agencies, including CISA and the ACSC, advises critical infrastructure operators to prepare to isolate vital operational technology systems during cyber incidents. The document defines concepts like vital systems, isolation points, and graduated versus physical isolation, and stresses planning, documentation, and regular testing. It highlights trade-offs, operational impacts, and the need to maintain manual operations and secure offline plans.

🛡️ This Unit 42 advisory, developed in partnership with Siemens, describes a chained exploit of three zero-day vulnerabilities in Siemens ROX II OT switches. The chain (CVE-2025-40948, CVE-2025-40947, CVE-2025-40949) enables arbitrary file disclosure, root privilege escalation and persistent root execution, risking full device compromise. Siemens has issued advisories and a firmware update V2.17.1; Palo Alto Networks provides virtual patching and OT device protections.

🔍 ESET Chief Security Evangelist Tony Anscombe reviews key cybersecurity stories from June 2026, assessing implications for defenders. He covers new CISA vulnerability patching rules, attacks on Internet-exposed automatic tank gauge (ATG) systems, rising imposter-scam losses reported by the FTC, and proposed UK and Canada social media bans for under-16s. Tony outlines lessons for organizations beyond federal agencies and practical steps to reduce risk.

🔒 The article reframes zero trust for operational technology (OT) by focusing on practical, non‑disruptive steps that align with regulatory requirements and operational realities. It proposes a 90‑day plan: Days 1–30 prioritize mapping assets and identities at IT/OT boundaries; Days 31–60 contain vendor remote access to gain early wins; Days 61–90 build a simple maturity scorecard and narrative. The approach emphasizes targeted controls, governance alignment, and measurable progress rather than abstract architectures.

🛡️ The Federal Court authorized the Canadian Security Intelligence Service to reach into infected servers, SOHO routers, and IoT devices on Canadian soil to neutralize two foreign-run botnets. The public ruling, released June 15, confirms CSIS used its threat reduction warrant powers for the first time to alter, degrade, and destroy botnet data while ensuring the operation targeted devices rather than people. The court found the threat imminent and proportional, but redactions leave the precise foreign actor(s) unidentified.

🔒 AzeoTech DAQFactory versions 21.1 and earlier contain a Type Confusion vulnerability that can be triggered by specially crafted .ctl files, potentially enabling arbitrary code execution. Users are advised to avoid opening documents from untrusted sources, store .ctl files in admin-only writable folders, operate in Safe Mode, and apply document editing passwords. CISA notes no known public exploitation and emphasizes network exposure minimization for control systems.

🔒 Schneider Electric has identified a CWE-331 Insufficient Entropy vulnerability affecting multiple Easergy, EcoStruxure, PowerLogic, and Saitel products that could enable unauthorized access or session compromise. Vendor-supplied fixes and firmware updates are available for numerous models and versions; several updates require a reboot. For models without immediate fixes, Schneider recommends network segmentation and reduced session timeouts as mitigations, and provides general cybersecurity best practices.

🛡️ Mitsubishi Electric reports an Expected Behavior Violation in the MELSEC iQ-F Series FX5-ENET/IP Ethernet Module that can be exploited to cause a denial-of-service by flooding the device's Ethernet port with packets. No patch is planned; vendors recommend network-level mitigations such as firewalls, VPNs, IP filtering, and restricting physical and network access to reduce exploitation risk.

🔒 Schneider Electric EasyLogic T150 and Saitel DP devices contain a CWE-22 Path Traversal vulnerability that can allow unauthorized access to sensitive files when server-side file path processing mishandles user input. Affected firmware versions include EasyLogic T150 <=11.06.31 and Saitel DP <=11.06.36. Remediations include firmware updates to 11.06.32 for EasyLogic T150 and 11.06.37 for Saitel DP; contact Schneider Electric Customer Care to obtain downloads and reboot devices after installing. CISA recommends network isolation, strict credential controls, and defensive measures for ICS devices.

🔒 Manufacturing facilities often rely on long-running operational technology (OT) that was built for stability, not security. As IT and OT converge, previously isolated systems face increased exposure to internet-borne attacks, ransomware, and supply-chain disruption. Effective defenses start with asset visibility, careful deployment choices, network protections for agentless devices, and long-term vendor support to mitigate risks without disrupting production.

🔒 A security issue was identified in Rockwell Automation FactoryTalk Analytics PavilionX due to improper authorization enforcement in API endpoints, allowing unauthorized actors to perform privileged operations such as user and role management. Rockwell Automation recommends updating PavilionX to version 7.01 or later. CISA advises minimizing network exposure of control system devices, isolating them behind firewalls, and using secure remote access methods while performing impact analysis before defensive changes.

🔒 Rockwell Automation FLEX I/O EtherNet/IP adapters (1794-AENTR) contain vulnerabilities that could enable unauthorized access, account takeover, and denial-of-service. A memory-handling flaw in CIP request processing may cause adapter faults and loss of I/O connectivity, while an embedded web server issue allows unauthenticated password changes via a crafted HTTP GET. Rockwell recommends updating to firmware 2.013 to remediate these issues.

🔒 A security advisory details vulnerabilities in Rockwell Automation CompactLogix 1769 controllers where missing validation of CIP sequence numbers and source IPs and exposure of CIP Connection IDs on the device web diagnostics page can be abused to trigger denial-of-service conditions. Rockwell recommends updating affected devices to firmware V38.011 and refers users to advisory SD1776 for mitigation steps. CISA advises minimizing network exposure, placing control systems behind firewalls, using secure remote access like VPNs, and following standard ICS defensive practices and reporting procedures.

🛡️ A denial-of-service vulnerability in Rockwell Automation Logix 5370 and 5570 controllers can cause a major nonrecoverable fault (MNRF) when a crafted CIP message is processed, with devices having less memory at greater risk. Rockwell advises updating to specific firmware versions: CompactLogix 5370 (34.016+), Compact GuardLogix 5370 (35.015+), ControlLogix 5570 (36.012+), and GuardLogix 5570 (37.011+). CISA recommends minimizing network exposure, isolating control networks behind firewalls, using secure remote access methods such as VPNs, and following ICS defensive best practices to reduce exploitation risk.

🔒 This advisory describes a stack-based buffer overflow and an out-of-bounds read in Rockwell Automation RSLinx Classic Third-Party components that can cause denial of service or enable remote code execution. Rockwell recommends upgrading to version 4.60.00 or later or applying patch BF31213 where upgrades are not possible. CISA urges minimizing network exposure, isolating control systems behind firewalls, and using secure remote access methods such as updated VPNs while performing impact analysis and risk assessments.

🔒 The 2026 Fortinet State of Operational Technology and Cybersecurity Report examines how OT security has moved to board-level attention as connectivity increases risk. Based on a global survey of over 700 OT professionals, the report finds improved visibility and governance but uneven maturity across organizations. Key gaps remain in segmentation, secure remote access, incident response, and regulation readiness.