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Water sector passes, government sector fails attempts to spot and halt simulated CISA attack

CISA red teamers compromised both a government and a water organization; water defenders detected and contained the simulated attack, government defenders did not.

CISA's red team gained initial access, elevated domain privileges, and lateral movement into sensitive business systems and cloud resources at an unnamed government organization, whose SOC ignored low- and medium-severity EDR alerts buried under thousands of false positives. A water organization's SOC quarantined phishing-compromised workstations within 2, 10, and 20 minutes, and later detected and isolated intrusions reaching the OT DMZ bastion host. Both organizations underestimated cloud risk, lacked Microsoft Conditional Access for workload identities, and had no process to revoke compromised access and refresh tokens. This is one of CISA's rare public red-team reports since 2023.

CyberScoop · 22d agoAdvisory1

CISA Urges Organizations to Deploy Cyber Decoys to Detect Hackers Inside Networksnew

CISA's new guidance urges organizations to deploy cyber decoys like honeytokens and tripwires to detect attackers using valid credentials and living-off-the-land techniques.

CISA published 'Using Cyber Decoys to Strengthen Detection and Response' on September 16, 2026, advising decoy assets that appear legitimate but generate high-confidence alerts when accessed. It describes tripwires, breadcrumbs, and honeytokens such as fake usernames, passwords, API keys, and cloud access tokens, and recommends starting with low-complexity deployments like nonfunctional Active Directory accounts, decoy file shares, and isolated mimic hosts. The agency warns decoys must be segmented and nonfunctional to prevent attackers pivoting to real systems, and aligns decoy planning with MITRE Engage and ATT&CK.

GBHackers · 29m agoAdvisory

G7 urges organizations to prepare for quantum cyber threats

G7 Cyber Security Working Group and CISA jointly urge organizations to begin migrating to post-quantum cryptography now, citing harvest-now-decrypt-later risk.

In a joint advisory, the G7 Cyber Security Working Group and CISA recommend starting post-quantum cryptography migration immediately rather than waiting for quantum computers to break current encryption. They warn attackers can already harvest encrypted data for later decryption, threatening long-lived secrets such as government records and trade secrets. Organizations are told to inventory sensitive systems, prioritize them, and fold quantum-resistant upgrades into routine refresh cycles. The advisory follows a UK 2035 PQC roadmap and recent US executive orders on quantum preparedness.

The Record · 12d agoAdvisory

CISA Red Team Compromised Two Critical Infrastructure Orgs, One Detected Nothing

CISA red teams fully compromised two critical infrastructure orgs with similar tradecraft; one detected nothing, the other contained phishing within minutes.

CISA advisory AA26-237A, 'A Tale of Two SOCs,' describes two simultaneous red team assessments of a Government Services organization and a Water and Wastewater Systems organization, both compromised to the domain level. Organization A never detected the intrusion, enabled by default credentials, a misconfigured AD CS template (ESC1), cleartext credentials, non-expiring static AWS keys, and over-permissioned Entra ID applications. Organization B detected and isolated phishing within 2-20 minutes, though the red team still reached krbtgt via DCSync from cleartext SCCM credentials. CISA attributes the outcome gap to people and processes rather than the security tools themselves.

The Hacker News · 21d agoAdvisory

CISA Releases Guidance on Deploying Cyber Decoys

CISA issued guidance on deploying honeypots, honeytokens, and decoy systems to detect adversaries and gather threat intelligence in critical infrastructure.

CISA released guidance on deploying cyber decoys, including lures, tripwires, decoy artifacts, honeytokens, and honeypots, within critical infrastructure organizations to complement Zero Trust models. The guidance outlines a three-phase operational process of preparation, execution, and understanding, advising decoys be placed where users rarely interact and configured to produce high-fidelity alerts. It aims to help defenders detect adversaries who use legitimate credentials, native tools, and living-off-the-land techniques, while enabling cost-effective threat intelligence collection.

SecurityWeek · 3h agoAdvisory

CISA Urges Service Providers to Provide Transparent Updates During Major IT and OT Outages

CISA and FBI issued guidance urging service providers to deliver timely, transparent communications during major IT and OT outages.

CISA, with the FBI and international partners, released 'Communicating Under Pressure: Best Practices for Service Providers', urging providers to prepare crisis-communication procedures, provide timely status updates during IT/OT outages, and maintain out-of-band communication channels. The guidance warns that disruptions to telecom, cloud, energy, and water services can cascade across critical infrastructure. It aligns with CISA's CI Fortify initiative supporting IT/OT isolation and recovery.

GBHackers · 6d agoAdvisory

CISA Updates Insider Threat Guide With New Mitigation Advice

CISA updated its Insider Threat Mitigation Guide on September 9 with new case studies and guidance on hybrid work, AI and employee separations.

CISA published a revision of its Insider Threat Mitigation Guide, first issued in 2020, adding case studies, statistics and guidance for security, HR and leadership audiences. New material covers hybrid and remote work changes to physical and digital access, AI used to manipulate or deceive, access control, visitor screening and adverse employee separations. The agency framed the update around growing insider threat impact on critical infrastructure and pointed to preparedness resources for organizations without existing programs.

Infosecurity Magazine · 6d agoAdvisory

NIST and CISA finalize playbook to stop token theft and forgery

NIST and CISA finalized NIST IR 8587, a playbook helping federal agencies and cloud providers defend identity tokens against theft and forgery.

The finalized NIST IR 8587 guidance covers protecting token signing keys, verifying tokens, lifetimes, revocation, session management, and dividing security responsibilities between cloud providers and customers. It cites an incident in which foreign actors forged tokens with a stolen commercial signing key to steal more than 60,000 emails from one government agency. It also recommends extending token protections to AI agents and preparing identity systems for a future post-quantum cryptography transition.

Help Net Security · 1d agoAdvisory 2 sources

Communicating Under Pressure: Best Practices for Service Providers

CISA, FBI, and international partners issued guidance on crisis communications for service providers during IT and OT outages, emphasizing clarity, transparency, and backup channels.

CISA, the FBI, and international partners published guidance on planning and executing clear, timely, audience-appropriate communications during IT and OT service outages, whether caused by cyber threat actors, human error, or natural hazards. The guidance stresses clarity, accountability, and transparency, and warns that outages at one organization can cascade across interconnected systems. It recommends critical infrastructure owners assume telecommunications may be unreliable and integrate backup communication methods into crisis plans, and points to CISA's CI Fortify initiative for OT isolation and recovery resources.

CISA Advisories · 14d agoAdvisory

CISA's logging guidance works beyond government

CISA released its Logging Reference Architecture in August 2026 to help federal agencies meet OMB M-26-14 logging requirements, usable as a benchmark by critical infrastructure operators.

CISA's Logging Reference Architecture (LRA), released in August 2026, helps US federal civilian agencies satisfy logging requirements in OMB Memorandum M-26-14 and explicitly encourages critical infrastructure operators to use it as a benchmark. The framework is organized around continuous event monitoring and threat hunting, investigation, response, and forensics, with a federal baseline of six months searchable and one year retrievable logs. Agencies must submit Agency Logging Plans within 90 days and work toward Advanced maturity within 320 days; the guidance also treats AI outputs as derived data requiring human review and preserved metadata.

Help Net Security · 24d agoAdvisory

AI agent authorization risks remain a gap in new NIST-CISA token security guidance

NIST and CISA release IR 8587 guidance on securing signed tokens, but AI agent authorization and delegation risks remain out of scope.

NIST, with CISA support, published 'Protecting Tokens and Assertions from Forgery, Theft, and Misuse' (NIST IR 8587), recommending continuous monitoring and tighter token lifecycle controls for SSO and API access. The guidance does not yet fully address AI agent identity, delegation chains, or prompt injection steering agents with valid tokens, and NIST says new or expanded standards are needed. Experts recommend treating AI agents as low-trust non-human identities, maintaining agent inventories, expiring credentials after task completion, and requiring human approval for high-risk actions. The report references shared-signal mechanisms like CAEP and RISC, and follows a May incident where a CISA contractor GitHub repository exposed AWS and GitHub tokens.

CSO Online · 19h agoAdvisory

CISA and NIST Issue Guidance to Protect Cloud Identity Tokens

CISA and NIST published Interagency Report 8587 with voluntary guidance to harden cloud identity tokens against theft, forgery, and lateral movement.

CISA and NIST released NIST Interagency Report 8587 on September 15 with final voluntary guidance for federal agencies, cloud providers, and their customers on protecting SSO, federation, and API tokens. Requirements include one-hour maximum token lifetimes, 90-day signing key rotation for high-impact systems, hardware-backed key storage, explicit audience fields, and keeping tokens out of logs. The guidance was motivated by the 2020 ADFS compromise where forged SAML assertions bypassed MFA, and an incident where a leaked consumer signing key enabled token forgery and theft of 60,000+ emails from one agency. Nearly 250 public comments shaped the text, with input from Google, Microsoft, Okta, AWS, Oracle, IBM, HashiCorp, Wiz, and the OpenID Foundation via the Joint Cyber Defense Collaborative.

Infosecurity Magazine · 21h agoAdvisory

Using Cyber Decoys to Strengthen Detection and Response

CISA released guidance on cyber decoys—tripwires, breadcrumbs, honeytokens—to help defenders detect adversaries using valid credentials and living-off-the-land techniques.

CISA published guidance to help defensive teams of varying maturity plan and implement cyber decoys—assets that mimic legitimate systems, accounts, or data, such as tripwires, breadcrumbs, and honeytokens—to detect adversaries using legitimate credentials and living-off-the-land techniques. The guidance frames decoys as complementing Zero Trust by producing high-fidelity alerts, reducing alert fatigue, and exposing post-compromise activity like discovery, lateral movement, and data access. It maps decoy operations to the MITRE Engage and MITRE ATT&CK frameworks with low-complexity implementation steps.

CISA Advisories · 23h agoAdvisory

Best Practices for Good Endpoint Hardening | Huntress

Huntress outlines endpoint hardening best practices, citing exposed RDP, RMM tool abuse, and ClickFix social engineering as common SMB intrusion paths.

Huntress published defensive guidance on endpoint hardening for small and mid-sized businesses, drawing on observations from its SOC. The post describes common intrusion vectors: internet-exposed RDP brute-forced by automated scanners, phishing emails delivering attacker-controlled remote monitoring and management (RMM) tools, with Huntress reporting a 277% spike in RMM abuse in 2025, and ClickFix attacks using fake CAPTCHA pages that trick users into running malicious commands. Recommended controls include scanning for exposed RDP, SSH, and VPN interfaces, removing unneeded local admin rights, enabling Windows Defender tamper protection, disabling SMBv1, and standardizing on one approved remote access tool, guided by CIS and NIST frameworks.

Huntress · 6d agoAdvisory

Windows memory integrity switches on automatically for eligible devices in October 2026

Microsoft's Windows quality updates will automatically enable memory integrity and Virtualization-based Security on eligible devices starting October 2026.

Beginning in October 2026, Windows quality updates will automatically enable memory integrity on eligible devices and turn on Virtualization-based Security where it is not already running. Memory integrity restricts kernel-mode execution to trusted, signed code and drivers, blocking kernel compromise and rootkits. Microsoft said existing administrator decisions remain in effect, and readiness checks weigh hardware capability, compatibility, and performance. Memory integrity also underpins hotpatch updates that install without a reboot, so unprotected devices are excluded from that servicing model.

Help Net Security · 14d agoAdvisory1

CISA Vulnerability Review

CISA's Vulnerability Review finds most compromises exploit exposed, well-known flaws due to basic security failures, based on FY2024-2025 data.

The CISA Vulnerability Review analyzes CISA and open-source data from fiscal years 2024 and 2025. It concludes most compromises do not rely on advanced techniques; threat actors scan the internet for exposed, well-known software vulnerabilities. CISA urges organizations to address underlying weaknesses and prioritize vulnerabilities for remediation based on the risk they pose.

CISA Advisories · 21d agoAdvisory

Help shape the future of resilient private 5G

The UK NCSC invites organizations to collaborate on developing secure, resilient and deployable private 5G network technologies.

The UK National Cyber Security Centre is seeking collaboration with organizations developing technologies and approaches for secure, resilient and deployable private 5G networks. The blog post is an open call to help shape future private 5G resilience.

NCSC UK · Aug 12, 2026Advisory

CISA promotes a fresh way to deter cyberattackers: Lie to them

CISA issued first-time guidance advising critical infrastructure operators to deploy honeypots, honeytokens, and decoys to detect and distract intruders.

CISA published 'Using Cyber Decoys to Strengthen Detection and Response,' a 22-page guide marking the agency's first guidance on decoys such as honeypots and honeytokens. Acting executive director Chris Butera described decoys as a low-cost, high-fidelity way to detect adversaries already inside networks, complementing zero-trust and assume-compromise approaches. The guidance covers decoy principles, definitions, deployment scenarios, and is aimed especially at resource-constrained critical infrastructure sectors.

CyberScoop · 15h agoAdvisory

CISA Warns Hackers Exploit 17 Active Directory Techniques to Gain Control of Enterprise Networks

CISA and Five Eyes agencies issued joint guidance detailing 17 Active Directory attack techniques like Kerberoasting and DCSync, with hardening and detection advice.

CISA, the NSA, and cyber agencies from Australia, Canada, the UK, and New Zealand released joint guidance on September 15 covering 17 techniques attackers use to compromise Active Directory, including AD CS, Certificate Services, and Federation Services attacks. Named techniques include Kerberoasting, AS-REP roasting, password spraying, DCSync, NTDS.dit dumping, Golden and Silver Tickets, Golden SAML, and Skeleton Key. Recommendations include minimizing SPN accounts, enforcing AES encryption, disabling NTLM, account lockout thresholds of five attempts, phishing-resistant MFA, and Tier 0 prioritization. The guide also lists Windows event IDs 4769, 4768, 4625, 4771, and 2889 for detecting Kerberoasting and password spraying on domain controllers.

GBHackers · 1d agoAdvisory

CISA and NIST Release Technical Checklist for Safeguarding Identity Tokens From Theft and Misuse

CISA and NIST published NIST IR 8587, final guidance for protecting identity tokens from forgery, theft, replay, and signing-key compromise.

NIST Interagency Report 8587 (September 15, 2026) expands the IA-13 'Identity Providers and Authorization Servers' control from NIST SP 800-53 R5.1.1, guiding federal agencies and cloud providers on SSO, identity federation, and machine-to-machine authentication. It requires hardware-backed signing-key storage for moderate-impact systems, 90-day key rotation for high-impact systems, token lifetimes under one hour, and sender-constrained mechanisms such as mutual TLS and DPoP. The report cites incidents including forged SAML assertions that exposed over 60,000 emails from a federal agency. It also extends guidance to agentic AI systems using signed tokens and urges post-quantum cryptography migration planning.

Cyber Security News · 1d agoAdvisory1

CISA Shares 17 Techniques Used by Hackers to Compromise Active Directory

CISA and five international agencies publish joint guidance detailing 17 techniques attackers use to compromise Microsoft Active Directory environments.

CISA, NSA, and the Australian Signals Directorate's ACSC, with contributions from Canadian, UK, and New Zealand cyber centers, released technical guidance on 17 Active Directory attack techniques. It covers AD Domain Services, AD Certificate Services, and AD Federation Services, including Kerberoasting, DCSync, Golden Ticket, Golden SAML, Skeleton Key, and Shadow Credentials. The guidance recommends treating domain controllers, CAs, AD FS servers, and Entra Connect systems as Tier 0 assets with phishing-resistant MFA, Kerberos pre-authentication enforcement, and disabling NTLM/SMBv1.

Cyber Security News · 1d agoAdvisory

Protecting Tokens and Assertions from Forgery, Theft, and Misuse: Implementation Recommendations for Agencies and Cloud Service Providers

NIST and CISA publish final interagency report with implementation guidance for protecting tokens and assertions from forgery and misuse.

CISA released a final NIST/CISA interagency report guiding federal agencies and cloud service providers on protecting identity assertions, access tokens, and cryptographic mechanisms underlying modern authentication and authorization. It addresses forgery, theft, and misuse of signed tokens that adversaries use for lateral movement and data access in hybrid and multi-cloud, SSO, federation, and API-based environments. The final version updates token validation, secrets management, and detection-at-scale guidance gathered via the Joint Cyber Defense Collaborative, and supports Executive Order 14306 and Secure by Design principles.

CISA Advisories · 1d agoAdvisory

Update your firewall rules: Teams and Copilot are changing address

Microsoft is redirecting Microsoft 365 and Teams web users to new *.cloud.microsoft domains, requiring firewall and proxy rule updates by early October.

Starting September 2026, Microsoft is redirecting M365 web users to copilot.cloud.microsoft and Teams web users to teams.cloud.microsoft, announced via MessageCenter posts MC1465764 and MC1462915. All redirects should complete by early October 2026, with limited Teams exceptions possible until December 31, 2026. Microsoft advises reviewing client, proxy, firewall, and secure web gateway configurations, and suggests using TenantRestrictions to control personal Microsoft account access instead of blocking the new Copilot address.

CSO Online · 5d agoAdvisory1

AWS Certificate Manager sets 2027 end date for email-validated certificate renewals

AWS Certificate Manager will phase out email validation for public certificates during 2027, requiring migration to DNS validation before September 30, 2027.

AWS Certificate Manager will stop offering email validation in new Regions on January 1, 2027, discontinue it for new certificate requests on March 31, 2027, and stop renewing email-validated certificates on September 30, 2027. This precedes the CA/Browser Forum's March 15, 2028 deadline ending email-based domain validation for publicly trusted certificates. AWS is updating the UpdateCertificateOptions API so customers can switch to DNS validation in place while retaining the certificate ARN, with Route 53 support for creating required CNAME records.

Help Net Security · Aug 14, 2026Advisory