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Businesses in 2026 can face ransomware and data extortion, phishing and credential theft, attacks on cloud identity, and risks from vulnerable or misconfigured internet-facing systems. The threats overlap: a stolen account or exposed system can provide a way in, while ransomware or data theft may be a later impact. Official CISA and joint-agency guidance published or revised through July 2025 supports these threat categories, but does not establish a ranking of which are most prevalent in 2026.
How ransomware and data extortion can disrupt a business
Ransomware encrypts files and can make devices or dependent systems unusable. Attackers may demand payment in exchange for decryption, interrupting business processes while the organization investigates and works to restore services.
Some actors also steal data and threaten to publish it. CISA and its partners call the combination of encryption and data theft “double extortion”; data theft and extortion can also happen without encryption. The risk therefore includes both operational disruption and possible disclosure of sensitive information, with potential reputational harm.
A June 4, 2025 CISA, FBI, and Australian Signals Directorate Australian Cyber Security Centre advisory describes double-extortion tactics used by the Play ransomware group, based on FBI investigations through January 2025. That is group-specific evidence, not a prediction that all ransomware actors—or businesses generally—will experience the same activity in 2026.
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How phishing and email compromise can open the door
Phishing messages may try to steal sign-in details or persuade someone to open malicious content. More targeted forms include spear phishing aimed at a person or organization and whaling directed at senior executives. CISA’s July 2025 cloud email use case identifies spam, phishing, spear phishing, and whaling as email threats, and describes email as a significant route for malware and credential theft.
A compromised email or other account can give an attacker access to business information or a foothold for further activity. CISA’s ransomware guidance notes that ransomware deployment can obscure earlier activity, including business email compromise. That describes a possible sequence—not that every email scam leads to ransomware, or that ransomware is the only consequence of a stolen account.
Why cloud identity and credentials need attention
Cloud services depend on accounts, authentication, permissions, and the systems used to issue or verify access. In a July 15, 2025 article, CISA’s Joint Cyber Defense Collaborative described recent cloud security incidents involving exploitation of vulnerabilities, forged tokens, and stolen credentials. These methods can let attackers misuse legitimate-looking access to reach organizational infrastructure.
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This is a risk to consider across cloud environments, not evidence that a particular provider is vulnerable. Security also depends on how access is granted and monitored, how cryptographic keys are managed, and which third-party services or dependencies are trusted.
What exposed or poorly maintained systems put at risk
Internet-facing systems may be exposed with exploitable vulnerabilities, misconfigurations, default credentials, or outdated software. An organization may not realize a system is reachable from the public internet, especially when assets are added or changed over time. CISA’s Internet Exposure Reduction Guidance, dated June 4, 2025, recommends identifying public exposure; its Play ransomware advisory also urges organizations to prioritize known exploited vulnerabilities and keep operating systems, applications, and firmware updated.
Exposure does not by itself prove that an attacker has compromised a system. It does create an opportunity that may be avoidable or reducible through asset visibility, removal of unnecessary access, and timely remediation. Which weaknesses are actively exploited can change, so do not treat a past advisory as a live list of current exploitation.
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What a business can do to reduce these risks
CISA’s guidance supports a set of practical controls. Their value depends on applying them to the accounts and systems that matter and checking that they work; no single measure removes cyber risk.
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- Protect important accounts. Require multifactor authentication (MFA) for email, remote access, file storage, and critical services. Prefer phishing-resistant MFA where available, particularly for privileged and exposed accounts. Check that the chosen method works with the organization’s identity provider, and plan how users will enroll and recover access if a factor is lost.
- Know what is reachable. Keep an inventory of internet-facing systems and review it as infrastructure changes. Remove services that do not need to be public, and check for default credentials, misconfiguration, and outdated software.
- Patch with risk in mind. Update operating systems, applications, and firmware. Prioritize known exploited vulnerabilities and consider the importance and exposure of the affected system when scheduling remediation.
- Make suspicious email reportable. Train employees to recognize and report suspicious messages. Use appropriate email filtering and external-message indicators to help people assess messages. Make sure reported messages reach someone who can investigate them.
- Prepare for recovery. Maintain offline backups and test that data and services can be restored from them. Document response roles and a recovery plan so staff know who makes decisions and how restoration will proceed during an incident.
- Review cloud access and oversight. Limit permissions to what users and services need. Review authentication and logging, key management, and third-party dependencies so the organization can better detect and investigate unexpected access.
How to interpret the 2026 outlook
These categories describe ways businesses can be affected; they do not show which threat is most likely for a particular company or industry. CISA and joint-agency materials available for this overview were published or revised through July 2025. They do not provide a comprehensive 2026 prevalence ranking, and the Play advisory’s group-specific findings should not be generalized to all ransomware. Businesses should use the threat paths above to assess their own exposed systems, valuable accounts, and recovery needs, while checking current official advisories for changing vulnerabilities and activity.
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