La confianza cero es un concepto ampliamente conocido en ciberseguridad, arraigado en la idea de que ninguna entidad, interna o externa, debe ser considerada como confiable por defecto. Aunque este enfoque tiene sus orígenes en la tecnología de la información (TI), su aplicabilidad se ha extendido recientemente al ámbito de la tecnología operativa (OT), donde los líderes de ciberseguridad están adaptando sus principios a los requisitos únicos de estos entornos.
Orígenes y principios fundamentales
La historia de la confianza cero se remonta al principio de privilegio mínimo (POLP) de mediados de la década de 1970, que aboga por otorgar solo la autoridad necesaria para realizar funciones específicas. Este principio establece la base para la confianza cero al limitar el acceso a datos y recursos únicamente a entidades autorizadas para su propósito legítimo. En esencia, la confianza cero tiene dos objetivos principales: prevenir el acceso no autorizado y minimizar las zonas de confianza explícitas.
Aplicación en entornos de OT
Si bien existen numerosas metodologías para implementar la confianza cero, cada una adaptada a las necesidades específicas de un entorno, es esencial comprender algunos conceptos clave para su implementación en OT.
Comenzar por algún lado: La implementación de confianza cero debe verse como un viaje, priorizando la seguridad y la eficiencia en función de la criticidad y el riesgo de exposición. Se recomienda comenzar con flujos de trabajo individuales y avanzar gradualmente.
Adaptación para OT: Los principios generales de confianza cero en TI, como la desconfianza de cualquier conexión remota y la evaluación continua del acceso, deben modificarse para su aplicación en OT, teniendo en cuenta las limitaciones del entorno.
Obtener Visibilidad: La comprensión completa de los activos, recursos y entidades en un entorno de OT es fundamental para identificar riesgos y priorizar la seguridad. Se deben utilizar sistemas de descubrimiento de activos para este propósito.
Aplicar Controles: Basándose en la visibilidad obtenida, se deben aplicar controles de seguridad en varios puntos, tanto a nivel de endpoint como de red, para limitar el acceso no autorizado y proteger los activos críticos.
Consideraciones Prácticas a Nivel de Red
A nivel de red, la implementación de la confianza cero implica la aplicación de políticas de segmentación estrictas para limitar la comunicación solo a los recursos necesarios. Los dispositivos de red también deben imponer grupos de segmentación para evitar movimientos laterales de los atacantes y la propagación de malware.
Además, es crucial proteger los activos vulnerables sin interrumpir su funcionalidad, utilizando sistemas de prevención de intrusiones y firewalls diseñados específicamente para OT.
Implementar la confianza cero en entornos de OT es un proceso complejo pero necesario para proteger la infraestructura crítica y garantizar la continuidad operativa del negocio. Al comprender los principios fundamentales y adaptar las mejores prácticas de seguridad de TI, las organizaciones pueden fortalecer sus defensas cibernéticas y mitigar los riesgos en entornos de OT.
Pocas tecnologías crecieron tan rápidamente como la computación en la nube y las coubicaciones —tanto dentro del mercado de los centros de datos como para la sociedad en general—.
Un factor que cambiará la dinámica de las compras por internet será la alta penetración de usuarios de smartphones, tanto en los mercados desarrollados como en los emergentes.
Being devoured, he only had time to let out a scream.That s all. Ye Fei wanted to know the details of the matter, although he never knew it.
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It was powerful before. Elsewhere, Wu Juan was fighting with the two hidden powerhouses.We must stay together as a team. It is very easy for a person to suffer big losses if he works alone, unless you are extremely powerful.
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Is this really a beast controlling talisman It seems to be the same as the real thing Sitting on the back of the white crane, Ye Fei subconsciously grabbed a crane feather.As if the woman aroused the lust in his heart, Senior Brother Sun stood up lazily and turned to the other side.
a total of nearly 30 million spiritual stones were obtained, and adding the original ones, the total was nearly 40 million spiritual stones.Ma Jun, who was the driver, fell down from his seat.
You will understand it slowly when you first come here.He did not expect that Qing Yi was so terrifying that he actually killed a protector.
Such ancient people can no longer be called humans.Force cannot be used here. One hundred and seventy million One hundred and ninety million Twenty one million Okay, very good.
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In the battle at Qianxiu Peak, all the road protectors were wiped out.Old man Han, don t explain so much to me. My cousin Wang Hao is no different from the dead now, and the two guardians were killed.
Ye Fei weakly lowered his magic bow, walked leisurely, and approached the green python intentionally or unintentionally, and And he missed his bearings.He is more than enough to be his mentor. Easy to say, easy to say.
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The great monk of the Baidi Sect also felt the power of this attack and couldn t help but put most of his defense on the front.If it had been before, perhaps there would be some great monks who would have ideas about obtaining the Hell Tired Crystal Essence without Li Yuanba s contribution.
Even if Supervisor Sun was released at this time, Supervisor Sun would be almost useless.This is not the most troublesome part. Refining the weapon is not just about engraving the runes on it.
This is the foundation of a super power with a complete guarantee system in large scale operations.Cangqiong Trading Company considered the eventuality after the Yuanying sword cultivator from Sword Intent Chongxiao Pavilion escaped.
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But the effect is not good. The earth wall built by the top earth element monk has the power of earth element rules inside.At that time, he will face a Lingbao level Nascent Soul mid stage weapon tribulation.
He was just glad that he accepted Li Shiming as his disciple and allowed the Ten Thousand Beasts Sect to survive the most dangerous period.The most important thing was that Patriarch Jinkai was the most powerful in this team.
During the process, it was also affected by the gravity field, and the attack speed was slowed down a bit, allowing the golden corpse to dodge calmly in the mid term.In addition to the cultivation of the previous sword cultivator, it is full of four qualities.
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Ivina wrote down every answer carefully and thoughtfully, and gradually understood the significance of the examination to select local officials.However, he had to admit that this was indeed feasible.
However, so far, Harov and others have never really left the eternal star under their feet, so they are Some movement.Let s burn it for a while first, and then take it back and take a look later Wisps of scorching immortal flames appeared around Lin En.
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Amidst the roar of anger and pain, the hot dragon s breath became more violent, and the entire dragon crashed directly into the direction where the bullet rain came.But I prefer to verify this process myself
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Councilor Tixia said rather helplessly. Have these bastards been caught They must be severely punished.
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