- What is Cybersecurity? | CISA
What is cybersecurity? Cybersecurity is the art of protecting networks, devices, and data from unauthorized access or criminal use and the practice of ensuring confidentiality, integrity, and availability of information It seems that everything relies on computers and the internet now—communication (e g , email, smartphones, tablets), entertainment (e g , interactive video games, social
- Cyber Threats and Response - CISA
Sophisticated cyber actors and nation-states exploit vulnerabilities to steal information and money and work to develop capabilities to disrupt, destroy, or threaten the delivery of essential services Defending against these attacks is essential to maintaining the nation’s security Any cyber-attack, no matter how small, is a threat to our national security and must be identified, managed
- Cybersecurity Best Practices | Cybersecurity and Infrastructure . . . - CISA
CISA provides information on cybersecurity best practices to help individuals and organizations implement preventative measures and manage cyber risks
- Cybersecurity | Homeland Security
The Department of Homeland Security and its components play a lead role in strengthening cybersecurity resilience across the nation and sectors, investigating malicious cyber activity, and advancing cybersecurity alongside our democratic values and principles
- Home Page | CISA
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
- Poland Energy Sector Cyber Incident Highlights OT and ICS . . . - CISA
In December 2025, a malicious cyber actor (s) targeted and compromised operational technology (OT) and industrial control systems (ICS) in Poland’s Energy Sector—specifically renewable energy plants, a combined heat and power plant, and a manufacturing sector company—in a cyber incident The malicious cyber activity highlights the need for critical infrastructure entities with vulnerable
- Incident Response | Cybersecurity and Infrastructure Security . . . - CISA
Overview Cyber incidents can harm U S national security interests, foreign relations, and the economy and can impact public confidence, civil liberties, and health and safety Because of this risk, all organizations should have clear, executable cyber incident response plans and strategies to protect their own interests and prevent an incident from growing and causing greater harm As
- No-Cost Cybersecurity Services Tools | CISA
CISA has curated a database of no-cost cybersecurity services and tools as part of our continuing mission to reduce cybersecurity risk across U S critical infrastructure partners and state, local, tribal, and territorial governments What's Included CISA's no-cost, in-house cybersecurity services designed to help individuals and organizations build and maintain a robust and resilient cyber
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