Contextual Background
On February 28, 2026, the United States and Israel launched strikes aimed at Iran, which retaliated with strikes against Israel and U.S. bases in the Middle East. Canada issued a statement supporting U.S. efforts to prevent Iran from obtaining a nuclear weapon and to deter threats to international peace and security. The move set the stage for heightened cyber risk as state actors reframe their diplomatic actions into information operations and disruptive activity online.
In response, the Canadian Centre for Cyber Security released a comprehensive cyber threat bulletin assessing Iran’s likely cyber retaliation and outlining defensive guidance for Canadian organizations. The bulletin describes Iranian state-sponsored actors as using cyber programs to advance geopolitical goals, including disruptive cyber-enabled information operations and the development of hacktivist networks and social media channels to intimidate opponents and shape public opinion.
Globally, Iranian actors are depicted as opportunistic, targeting poorly secured critical infrastructure and internet-connected devices across sectors such as water and energy. Reported activities span denial-of-service campaigns, attempts to manipulate industrial control systems, and access capable of encryption, data wiping, and data leaks. Pro-Iran hacktivists are active against rivals but often overstate their impact, according to the bulletin.
Canada is highlighted as a potential target for low-sophistication disruptive activity due to public support for U.S./Israel actions, with Iranian actors anticipated to conduct cyber espionage against Canadians viewed as threats, including political activists, journalists, and human rights advocates. The bulletin frames broader aims against opponents abroad—particularly those seeking regime change in Iran.
A focal point of the analysis is sophisticated social engineering and spear phishing used to access networks, targeting public officials and organizations in aerospace, energy, defense, security, and telecommunications. Iranian actors are said to exploit known vulnerabilities to gain initial access and pursue long-running operations such as data exfiltration, encryption, ransomware, and extortion. They reportedly identify targets with publicly available scanning tools, emphasizing weak configurations, default or weak passwords, and limited MFA deployment.
The bulletin emphasizes defensive measures—enabling MFA, applying timely patches, defending against DDoS, recognizing phishing, and securing accounts and devices—and references resources like the National Cyber Threat Assessment 2025-2026 and cross-sector readiness tools. Information is current as of February 28, 2026, reflecting a persistent, multi-faceted risk profile that spans disruption, espionage, and influence operations.
Iranian Cyber Threat Landscape
Following the February 28 strikes, Iranian state-sponsored cyber actors have escalated their posture, pursuing retaliation and geopolitical aims through a mix of disruptive operations and information campaigns. The Canadian Centre for Cyber Security’s threat bulletin describes these actors as operating under a structured program that blends conventional cyber intrusions with strategic messaging to complicate international responses and deter opponents. Analysts note a shift toward speed and scale in online operations, with campaigns designed to exploit news cycles and public sentiment. In practice, the attackers seek both material disruption and political signaling, leveraging digital tools to amplify their impact beyond the battlefield.
Beyond purely destructive acts, Iran’s cyber program emphasizes cyber-enabled information operations. Hacktivist networks and social media channels are cultivated to intimidate opponents, spread propaganda, and influence public opinion across borders. The bulletin highlights coordinated messaging on platforms associated with political discourse, designed to undermine trust in institutions and accelerate strategic decisions. These operations are not isolated; they are integrated with physical actions to pressure governments and international bodies. The effect is to create ambiguity about attribution and consequence, complicating responses for target organizations and allies alike. Analysts describe a deliberate coupling of online narratives with real-world pressure campaigns, making attribution and response timing more challenging for partners.
Globally, Iranian actors opportunistically target poorly secured critical infrastructure and internet-connected devices, with a focus on water and energy sectors. DDoS campaigns punctuate early-stage campaigns, while attempts to access or manipulate industrial control systems raise the risk of physical disruption. When access is achieved, actors may deploy encryption or data-wiping tools, or exfiltrate sensitive information that can be leveraged for coercion or bargaining. Data leaks following breaches serve as a deterrent against whistleblowing. The bulletin also notes that state-sponsored groups use espionage techniques against perceived threats, including researchers and dissidents abroad.
Countermeasures emphasize resilience and rapid detection of social engineering and spear-phishing campaigns, which are used to gain initial access to networks. The bulletin warns that public officials, think tanks, and critical infrastructure operators are high-value targets for Iran’s cyber force. In Canada and allied states, actors may redouble intelligence collection against political activists, journalists, and human rights advocates, seeking to map opposition networks and influence policy. Organizations should assume ongoing pressure across supply chains and adopt layered defenses, stronger authentication, and continuous monitoring to blunt these campaigns.
Social Engineering and Phishing Tactics
In the wake of the February 28 strikes, Iranian state-sponsored actors have sharpened social engineering as retaliation and a geopolitical tool. Threat bulletins describe these actors deploying disruptive cyber-enabled information operations and network intrusions that hinge on convincing social engineering. Public systems and agencies are frequently targeted through tailored emails impersonating official communications or critical infrastructure alerts. The objective is to harvest credentials, plant footholds, and pivot into networks before defenses can adapt to emerging tactics.
Spear phishing relies on persona-based messaging, domain impersonation, and links to look-alike login portals that mimic official sites. Messages exploit timeliness and authority, using current events or security alerts to drive urgency and clicks. Target sectors cited include public officials, civil society organizations, energy and water utilities, municipal services, and researchers. Successful access enables credential harvesting, foothold establishment, and movement across networks to disrupt or exfiltrate sensitive data.
Public organizations bear the brunt when initial access succeeds, triggering immediate operational interruptions and reputational damage. Credential theft can unlock confidential records, delay licensing processes, and stall emergency services relied upon by citizens. Infra intrusions risk encryption, data loss, and manipulation of monitoring dashboards in energy and water sectors. Defensive measures include Microsoft 365 Defender, Proofpoint, and Mimecast, combined with MFA and ongoing security-awareness training.
Phishing emails commonly blend authentic branding with subtle inconsistencies, such as minor domain misspellings or misaligned time zones. Attackers increasingly weaponize social media and news feeds to craft believable lure messages referencing sanctions, elections, or cyber incidents. Public sector organizations must harden protocols for supplier emails, since compromised partners can serve as trusted entry points. Security teams should integrate machine learning-based anomaly detection with user education to catch evolving phishing variants.
Internationally, threat intelligence sharing about Iran’s phishing playbooks helps regional defenders anticipate new lures. Cybersecurity agencies emphasize continuous phishing simulations, MFA enforcement, and rapid incident response playbooks. Public organizations should run quarterly tabletop exercises that stress email security, identity verification, and access-control renewal. Ultimately, long-term resilience depends on people, processes, and platform controls working in concert to adapt to evolving threats.
Defensive Measures and Resources
In the wake of the February 28 strikes, the Cyber Centre’s threat bulletin underscores a layered defense to deter retaliation and protect critical assets. Canadian organizations should act quickly to harden access, patch vulnerabilities, and strengthen monitoring. Multi-factor authentication and timely software updates are central to reducing exposure.
Cyber Centre guidance outlines essential defensive actions and a suite of resources for Canadian entities, including threat intel briefings, incident response playbooks, and recovery templates. The following blocks translate that guidance into concrete steps for immediate deployment across networks, clouds, and endpoints.
“,”caption”:”Defensive coding snippet for MFA, patching, and monitoring”}
Actionable steps include rapid MFA deployment, automated patch management, and centralized security monitoring. The code snippet above demonstrates a pragmatic automation approach tied to identity, device, and logging layers to reduce exposure to state-backed actors and opportunistic threats.
To accompany the code, the resource allocation chart below illustrates how defensive investments are typically distributed across three core areas: Technical controls, People and processes, and Governance partnerships. The percentages reflect a practical mix for quick deployment in high-risk geopolitical contexts.
- Enforce MFA on all user accounts and devices
- Require prompt patching within a defined window (e.g., 14 days)
- Enhance logging, monitoring, and alerting for suspicious activity
- Implement regular phishing and social engineering awareness campaigns
- Review third-party access and coordinate with national cyber resources
Best Practices for Cyber Hygiene
The Cyber Centre’s threat bulletin underscores that Iranian state-sponsored actors rely on social engineering, spear phishing, and opportunistic targeting of poorly secured networks. Organizations should adopt defense-in-depth strategies, rapid patching, and continuous user education to blunt retaliation efforts and protect critical infrastructure.
- Network segmentation and least privilege with MFA and hardware keys (YubiKey); enforce Azure AD conditional access.
- Endpoint security: deploy Microsoft Defender for Endpoint or CrowdStrike Falcon; enable EDR and automatic remediation.
- Patch management: monthly patch cycle; use SCCM/WSUS; apply critical updates within 14 days.
- Backups and recovery: implement Veeam or Acronis; verify backups and test restores quarterly.
- Email and web security: deploy Proofpoint or Mimecast; enable sandboxing; disable macros by default.
- Logging and monitoring: centralize with Splunk or Elastic; SIEM alerts for anomalies; integrate threat intel feeds.
- User training: KnowBe4 phishing simulations; regular micro-trainings on social engineering tactics.
- Incident response: IR playbooks aligned to NIST SP 800-61; conduct tabletop exercises and update runbooks.
