Image of a key made out of light blue cyber nodes to represent protection in the cyber realm. Reads: Guidance Preparing for the Post-Quantum Era: A Call to Action

CISA and the G7 Cyber Security Working Group Urge Organizations to Begin Transitioning to Post-Quantum Cryptography

This call to action highlights the urgent need for organization to start planning for and transitioning to post-quantum cryptography (PQC) to protect their digital infrastructures as quantum computing advances.

Honeycomb shapes with icons for telecommunications, water, and other critical infrastructure with a shield shape with a lock on top. The image reads, "Guidance: Communicating Under Pressure: Best Practices for Service Providers."

CISA and Partners Release Guidance to Help Service Providers Effectively Communicate During Outages

During service outages, clear communication matters. This guidance helps service providers plan for timely, accurate and ongoing communications that reduce panic and operational impact while maintaining trust.

Reads "National Insider Threat Awareness Month September 2026" next to a badge shape filled with images of 5 faceless people standing below icons of a building, a lock, a badge, an explosion, an eye, a camera with flash, a police badge, a human head with lighting bolt in the mind, a bomb, a bug, and an exclamation mark denoting a warning. All icons are meant to represent potential threats.

Strengthen your security

Stay vigilant. Join CISA’s National Insider Threat Awareness Month events, use our resources, and take steps to strengthen your insider threat program.

An image of a set of servers in a server farm with the CISA logo in the upper lefthand corner. Below the image it reads, "Guidance: CISA Vulnerability Review"

CISA Releases Vulnerability Review

Cyber threat actors often exploit known software weaknesses. This review baselines the vulnerability landscape before AI-enabled discovery becomes widespread, and highlights how Secure by Design and risk-based prioritization strengthens resilience.

Securing the Next 250 with CISA logo in the corner next to "Cybersecurity Awareness Month"

October is just around the corner!

Get ready for Cybersecurity Awareness Month with tools, tips, and other resources to help you organize your own activities.

3D blocks lined up like dominoes with blue and red lights curving through the blocks toward each other as if working through a maze. CISA logo is in the upper right hand corner and the bottom reads: "Cybersecurity Advisory: A Tale of Two SOCS: Insights from Two Red Team Assessments"

CISA Releases Cybersecurity Advisory Detailing Insights from Two Red Team Assessments Conducted at Critical Infrastructure Organizations

Same tactics, very different results. This advisory compares defensive outcomes from two red team assessments. Learn what drove detection and implement key actions to protect your organization’s sensitive business systems.

JCDC unifies cyber defenders from organizations worldwide. This team proactively gathers, analyzes, and shares actionable cyber risk information to enable synchronized, holistic cybersecurity planning, cyber defense, and response.

StopRansomware.gov is the U.S. Government's official one-stop location for resources to tackle ransomware more effectively.

SAFECOM works to improve emergency communications interoperability across local, regional, tribal, state, territorial, international borders, and with federal government entities.

Additional CISA Resources

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CISA Resources & Tools

CISA offers an array of free resources and tools, such as technical assistance, exercises, cybersecurity assessments, free training, and more.

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CISA Events

CISA hosts and participates in events throughout the year to engage stakeholders, seek research partners, and communicate with the public to help protect the homeland.

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CISA Services Catalog

A single resource that provides you with access to information on services across CISA’s mission areas.

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CISA Training

As part of our continuing mission to reduce cybersecurity and physical security risk, CISA provides a robust offering of cybersecurity and critical infrastructure training opportunities.