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Cybersecurity and Infrastructure Security Agency (CISA)

You are subscribed to Cybersecurity Advisories for Cybersecurity and Infras= tructure Security Agency. This information has recently been updated and is=
now available.

CISA and Federal Partners Release Joint Guidance for Adapting Zero Trust Pr= inciples to Operational Technology [ https://www.cisa.gov/resources-tools/r= esources/adapting-zero-trust-principles-operational-technology ] 04/29/2026=
2:00 PM EDT=20

CISA, in coordination with the Department of War, Department of Energy, Fed= eral Bureau of Investigation, and Department of State, released Adapting Ze=
ro Trust Principles to Operational Technology [ https://www.cisa.gov/resour= ces-tools/resources/adapting-zero-trust-principles-operational-technology ]=
, joint guidance for organizations applying zero trust (ZT) principles to o= perational technology (OT). Zero trust is a modern, adaptive approach to cy= bersecurity that eliminates implicit trust and requires continuously valida= ting access based on identity, context, and risk.

With advancements in technology, OT systems that were traditionally isolate=
d or manually operated are now increasingly interconnected, digitally monit= ored, and remotely controlled. This IT-OT convergence introduces new cybers= ecurity risks that make perimeter-based defenses and implicit trust models = inadequate for safeguarding OT systems and the critical physical processes = they control.

This guidance supports OT owners and operators in addressing the unique cha= llenges of transitioning to a ZT architecture, considering technology gaps = from legacy infrastructure, operational constraints, and safety requirement=
s. It focuses on establishing comprehensive asset visibility, proactively a= ddressing supply chain risks, and implementing robust identity and access m= anagement while stressing the importance of layered security measures=E2=80= =94including network segmentation, secure communication protocols, and vuln= erability management.

For more information about ZT principles, visit CISA=E2=80=99s Zero Trust [=
https://www.cisa.gov/topics/cybersecurity-best-practices/zero-trust ] webp= age.

Please share your thoughts with us through this anonymous survey [ https://= cisasurvey.gov1.qualtrics.com/jfe/form/SV_9n4TtB8uttUPaM6?Source=3DGovDeliv= eryhttps://www.cisa.gov/resources-tools/resources/adapting-zero-trust-princ= iples-operational-technology ]. We appreciate your feedback.

This product is provided subject to this Notification [ https://www.cisa.go= v/notification ] and this Privacy & Use [ https://www.cisa.gov/privacy-poli=
cy ] policy.=C2=A0

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Manage Subscriptions [ https://public.govdelivery.com/accounts/USDHSCISA/su= bscriber/edit?preferences=3Dtrue#tab1 ]=C2=A0=C2=A0|=C2=A0=C2=A0Privacy Pol= icy [ https://www.cisa.gov/privacy-policy ]=C2=A0=C2=A0|=C2=A0 Help [ https= ://subscriberhelp.granicus.com/s/article/Subscriber-Help-Center ] [ https:/= /insights.govdelivery.com/Communications/Subscriber_Help_Center ]

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ce for Adapting Zero Trust Principles to Operational Technology
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<p><img src=3D"https://content.govdelivery.com/attachments/fancy_images/U= SDHSCISA/2020/06/3486054/05152023-gov-delivery-banner-copy_original.png" al= t=3D"Cybersecurity and Infrastructure Security Agency (CISA)" title=3D"" wi= dth=3D"600" height=3D"100"></p>
<p>You are subscribed to Cybersecurity Advisories for Cybersecurity and I= nfrastructure Security Agency. This information has recently been updated a=
nd is now available.</p>
<div class=3D"rss_title" style=3D"font-weight: bold; font-size: 120%; margi=
n: 0 0 0.3em; padding: 0;"><a href=3D"https://www.cisa.gov/resources-tools/= resources/adapting-zero-trust-principles-operational-technology" target=3D"= _blank" title=3D"CISA and Federal Partners Release Joint Guidance for Adapt= ing Zero Trust Principles to Operational Technology" rel=3D"noopener">CISA = and Federal Partners Release Joint Guidance for Adapting Zero Trust Princip= les to Operational Technology</a></div>
<div class=3D"rss_pub_date" style=3D"font-size: 90%; font-style: italic; co= lor: #666666; margin: 0 0 0.3em; padding: 0;">04/29/2026 2:00 PM EDT</div> <p>CISA, in coordination with the Department of War, Department of Energy, = Federal Bureau of Investigation, and Department of State, released <a href= =3D"https://www.cisa.gov/resources-tools/resources/adapting-zero-trust-prin= ciples-operational-technology" target=3D"_blank" title=3D"Adapting Zero Tru=
st Principles to Operational Technology" rel=3D"noopener">Adapting Zero Tru=
st Principles to Operational Technology</a>, joint guidance for organizatio=
ns applying zero trust (ZT) principles to operational technology (OT). Zero=
trust is a modern, adaptive approach to cybersecurity that eliminates impl= icit trust and requires continuously validating access based on identity, c= ontext, and risk.</p>
<p>With advancements in technology, OT systems that were traditionally isol= ated or manually operated are now increasingly interconnected, digitally mo= nitored, and remotely controlled. This IT-OT convergence introduces new cyb= ersecurity risks that make perimeter-based defenses and implicit trust mode=
ls inadequate for safeguarding OT systems and the critical physical process=
es they control.</p>
<p>This guidance supports OT owners and operators in addressing the unique = challenges of transitioning to a ZT architecture, considering technology ga=
ps from legacy infrastructure, operational constraints, and safety requirem= ents. It focuses on establishing comprehensive asset visibility, proactivel=
y addressing supply chain risks, and implementing robust identity and acces=
s management while stressing the importance of layered security measures=E2= =80=94including network segmentation, secure communication protocols, and v= ulnerability management.</p>
<p>For more information about ZT principles, visit CISA=E2=80=99s <a href= =3D"https://www.cisa.gov/topics/cybersecurity-best-practices/zero-trust" ta= rget=3D"_blank" title=3D"Zero Trust" rel=3D"noopener">Zero Trust</a> webpag= e.</p>
<p>Please share your thoughts with us through this <a href=3D"https://cisas= urvey.gov1.qualtrics.com/jfe/form/SV_9n4TtB8uttUPaM6?Source=3DGovDeliveryht= tps://www.cisa.gov/resources-tools/resources/adapting-zero-trust-principles= -operational-technology" target=3D"_blank" title=3D"anonymous survey" rel= =3D"noopener">anonymous survey</a>. We appreciate your feedback.</p>
<p>This product is provided subject to this <a href=3D"https://www.cisa.gov= /notification" target=3D"_blank" title=3D"Notification" rel=3D"noopener">No= tification</a> and this <a href=3D"https://www.cisa.gov/privacy-policy" tar= get=3D"_blank" title=3D"Privacy &amp; Use" rel=3D"noopener">Privacy &amp; U= se</a> policy.=C2=A0</p>
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