U.s. organizations increasingly rely on commercial software with known vulnerabilities.

Russia’s invasion of Ukraine could impact organizations both within and beyond the region, to include malicious cyber activity against the U.S. homeland, including as a response to the unprecedented economic costs imposed on Russia by the U.S. and our allies and partners. Evolving intelligence indicates that the Russian Government is exploring options for potential cyberattacks. Every organization—large and small—must be prepared to respond to disruptive cyber incidents. As the nation’s cyber defense agency, CISA stands ready to help organizations prepare for, respond to, and mitigate the impact of cyberattacks. When cyber incidents are reported quickly, we can use this information to render assistance and as warning to prevent other organizations and entities from falling victim to a similar attack.

Organizations can also report anomalous cyber activity and/or cyber incidents 24/7 to  or (888) 282-0870.

• Statement by President Biden on our Nation’s Cybersecurity
• White House Fact Sheet: Act Now to Protect Against Potential Cyberattacks
• United States and Ukraine Expand Cooperation on Cybersecurity

CISA recommends all organizations—regardless of size—adopt a heightened posture when it comes to cybersecurity and protecting their most critical assets. Recognizing that many organizations find it challenging to identify resources for urgent security improvements, we’ve compiled free cybersecurity services and tools from government partners, and industry to assist. Recommended actions include:

Reduce the likelihood of a damaging cyber intrusion

• Validate that all remote access to the organization’s network and privileged or administrative access requires multi-factor authentication.
• Ensure that software is up to date, prioritizing updates that address known exploited vulnerabilities identified by CISA.
• Confirm that the organization’s IT personnel have disabled all ports and protocols that are not essential for business purposes.
• If the organization is using cloud services, ensure that IT personnel have reviewed and implemented strong controls outlined in CISA's guidance.
• Sign up for CISA's free cyber hygiene services, including vulnerability scanning, to help reduce exposure to threats.

Take steps to quickly detect a potential intrusion

• Ensure that cybersecurity/IT personnel are focused on identifying and quickly assessing any unexpected or unusual network behavior. Enable logging in order to better investigate issues or events.
• Confirm that the organization's entire network is protected by antivirus/antimalware software and that signatures in these tools are updated.
• If working with Ukrainian organizations, take extra care to monitor, inspect, and isolate traffic from those organizations; closely review access controls for that traffic.

Ensure that the organization is prepared to respond if an intrusion occurs

• Designate a crisis-response team with main points of contact for a suspected cybersecurity incident and roles/responsibilities within the organization, including technology, communications, legal and business continuity.
• Assure availability of key personnel; identify means to provide surge support for responding to an incident.
• Conduct a tabletop exercise to ensure that all participants understand their roles during an incident.

Maximize the organization's resilience to a destructive cyber incident

• Test backup procedures to ensure that critical data can be rapidly restored if the organization is impacted by ransomware or a destructive cyberattack; ensure that backups are isolated from network connections.
• If using industrial control systems or operational technology, conduct a test of manual controls to ensure that critical functions remain operable if the organization’s network is unavailable or untrusted.

By implementing the steps above, all organizations can make near-term progress toward improving cybersecurity and resilience. In addition, while recent cyber incidents have not been attributed to specific actors, CISA urges cybersecurity/IT personnel at every organization to review Understanding and Mitigating Russian State-Sponsored Cyber Threats to U.S. Critical Infrastructure. CISA also recommends organizations visit StopRansomware.gov, a centralized, whole-of-government webpage providing ransomware resources and alerts.
 

Corporate leaders have an important role to play in ensuring that their organization adopts a heightened security posture. CISA urges all senior leaders, including CEOs, to take the following steps:

• Empower Chief Information Security Officers (CISO): In nearly every organization, security improvements are weighed against cost and operational risks to the business. In this heightened threat environment, senior management should empower CISOs by including them in the decision-making process for risk to the company, and ensure that the entire organization understands that security investments are a top priority in the immediate term.  

• Lower Reporting Thresholds: Every organization should have documented thresholds for reporting potential cyber incidents to senior management and to the U.S. government. In this heightened threat environment, these thresholds should be significantly lower than normal. Senior management should establish an expectation that any indications of malicious cyber activity, even if blocked by security controls, should be reported to . Lowering thresholds will ensure we are able to immediately identify an issue and help protect against further attack or victims.  

• Participate in a Test of Response Plans: Cyber incident response plans should include not only your security and IT teams, but also senior business leadership and Board members. If you’ve not already done, senior management should participate in a tabletop exercise to ensure familiarity with how your organization will manage a major cyber incident, to not only your company but also companies within your supply chain.  

• Focus on Continuity: Recognizing finite resources, investments in security and resilience should be focused on those systems supporting critical business functions. Senior management should ensure that such systems have been identified and that continuity tests have been conducted to ensure that critical business functions can remain available subsequent to a cyber intrusion.  

• Plan for the Worst: While the U.S. government does not have credible information regarding specific threats to the U.S. homeland, organizations should plan for a worst-case scenario. Senior management should ensure that exigent measures can be taken to protect your organization’s most critical assets in case of an intrusion, including disconnecting high-impact parts of the network if necessary.
   

If you have experienced a ransomware attack, CISA strongly recommends using the following checklist provided in a Joint CISA and Multi-State Information Sharing and Analysis Center (MS-ISAC) Ransomware Guide to respond. This information will take you through the response process from detection to containment and eradication. 

1. Determine which systems were impacted, and immediately isolate them.
2. Only in the event you are unable to disconnect devices from the network, power them down to avoid further spread of the ransomware infection.
3. Triage impacted systems for restoration and recovery.
4. Consult with your incident response team to develop and document an initial understanding of what has occurred based on initial analysis.
5. Engage your internal and external teams and stakeholders with an understanding of what they can provide to help you mitigate, respond to, and recover from the incident. 
6. Take a system image and memory capture of a sample of affected devices (e.g., workstations and servers).
7. Consult federal law enforcement regarding possible decryptors available, as security researchers have already broken the encryption algorithms for some ransomware variants.

For more detailed information, visit the StopRansomware.gov website, and follow the steps on the I’ve Been Hit by Ransomware! page.
 

Every individual can take simple steps to improve their cyber hygiene and protect themselves online. In fact there are 4 things you can do to keep yourself cyber safe. CISA urges everyone to practice the following: 

• Implement multi-factor authentication on your accounts. A password isn’t enough to keep you safe online. By implementing a second layer of identification, like a confirmation text message or email, a code from an authentication app, a fingerprint or Face ID, or best yet, a FIDO key,  you’re giving your bank, email provider, or any other site you’re logging into the confidence that it really is you. Multi-factor authentication can make you significantly less likely to get hacked. So enable multi-factor authentication on your email, social media, online shopping, financial services accounts. And don’t forget your gaming and streaming entertainment services!   
• Update your software. In fact, turn on automatic updates. Bad actors will exploit flaws in the system. Update the operating system on your mobile phones, tablets, and laptops.  And update your applications – especially the web browsers – on all your devices too.   Leverage automatic updates for all devices, applications, and operating systems. 
• Think before you click. More than 90% of successful cyber-attacks start with a phishing email. A phishing scheme is when a link or webpage looks legitimate, but it’s a trick designed by bad actors to have you reveal your passwords, social security number, credit card numbers, or other sensitive information. Once they have that information, they can use it on legitimate sites. And they may try to get you to run malicious software, also known as malware.  If it’s a link you don’t recognize, trust your instincts, and think before you click. 
• Use strong passwords, and ideally a password manager to generate and store unique passwords. Our world is increasingly digital and increasingly interconnected. So, while we must protect ourselves, it’s going to take all of us to really protect the systems we all rely on. 
   

Cybersecurity Advisories

2021 Top Malware Strains

Control System Defense: Know the Opponent

Weak Security Controls and Practices Routinely Exploited for Initial Access

CISA, FBI, NSA, and International Partners Issue Advisory on Demonstrated Threats and Capabilities of Russian State-Sponsored and Cyber Criminal Actors 

DOE/CISA/NSA/FBI Cybersecurity Advisory: APT Cyber Tools Targeting ICS/SCADA Devices

Sharing Cyber Event Information: Observe, Act, Report

CISA/DOE Insights: Mitigating Attacks Against Uninterruptible Power Supply Devices

Tactics, Techniques, and Procedures of Indicted State-Sponsored Russian Cyber Actors Targeting the Energy Sector

Russian State-Sponsored Cyber Actors Gain Network Access by Exploiting Default Multifactor Authentication Protocols and ‘PrintNightmare’ Vulnerability

Update: Destructive Malware Targeting Organizations in Ukraine

Joint Cybersecurity Alert: Protecting Against Cyber Threats to Managed Service Providers and their Customers

Joint Cybersecurity Advisory: 2021 Top Routinely Exploited Vulnerabilities

Russian State-Sponsored and Criminal Cyber Threats to Critical Infrastructure

Alert (AA22-057A) Destructive Malware Targeting Organizations in Ukraine (February 2022)

Updated: Conti Ransomware Cybersecurity Advisory

CISA Insights: Preparing for and Mitigating Foreign Influence Operations Targeting Critical Infrastructure (pdf) (February 2022)

CISA Insights: Implement Cybersecurity Measures Now to Protect Against Potential Critical Threats  (pdf) (January 2022)

Alert (AA22-011A) Understanding and Mitigating Russian State-Sponsored Cyber Threats to U.S. Critical Infrastructure (January 2022)

Russia Cyber Threat Overview and Advisories

Cyber Preparedness Resources

UPDATED 10 MAY Strengthening Cybersecurity of SATCOM Network Providers and Customers

National Cyber Awareness System 

New Federal Government Cybersecurity Incident and Vulnerability Response Playbooks

Cyber Essentials Toolkits 

Cyber Resource Hub 

CISA Cybersecurity Awareness Program Toolkit

CISA Tools

Shields Up Technical Guidance

Cyber Guidance for Small Businesses

Cyber Incident Resource Guide for Governors

COVID-19 Disinformation Toolkit

Free Public and Private Sector Cybersecurity Tools and Services

Known Exploited Vulnerabilities Catalog

Mis-, Dis-, and Malinformation Resources

MDM Rumor Control Page Start-Up Guide

War on Pineapple

Emergency Communications Resources

Priority Telecommunications Fact Sheet (.pdf, 337.37kb)

Priority Telecommunications Eligibility Fact Sheet (.pdf, 684.49kb)