This threat involves a phishing campaign targeting Microsoft Office 365 users, where the phishing content is hosted on the InterPlanetary File System (IPFS), a decentralized and distributed file storage network. The campaign attempts to deceive users into divulging their Office 365 credentials by leveraging a phishing page accessible via an IPFS link (https://ipfs.io/ipfs/QmdZDtyPrvVegTU7p6JZ5dm3CoZnH2qdEjTRfsUY8Nncwh). Hosting phishing pages on IPFS is notable because IPFS content is distributed and harder to take down compared to traditional centralized hosting, potentially increasing the persistence and reach of the phishing campaign. The campaign is categorized under the MITRE ATT&CK technique T1566 (phishing), which involves sending fraudulent communications to trick victims into revealing sensitive information. The reported severity is low, and there is no evidence of known exploits in the wild beyond the phishing attempt itself. The certainty of this intelligence is moderate (50%), indicating some confidence but also some uncertainty about the campaign's scope or impact. The threat level is rated as 3, suggesting a moderate concern. No specific affected versions or patches are applicable since this is a social engineering attack rather than a software vulnerability. The use of IPFS for hosting phishing content represents an evolution in attacker tactics, complicating takedown efforts and potentially enabling longer-lived phishing infrastructure.

For European organizations, the primary impact of this threat is the risk of credential compromise for Microsoft Office 365 accounts, which are widely used across Europe for email, collaboration, and document management. Successful credential theft can lead to unauthorized access to sensitive corporate data, email interception, business email compromise (BEC), and lateral movement within networks. Given the decentralized hosting on IPFS, traditional URL blacklisting and takedown mechanisms may be less effective, potentially increasing exposure duration. This could lead to increased phishing success rates and prolonged attacker presence. Organizations with heavy reliance on Office 365, especially those with sensitive or regulated data, face risks to confidentiality and integrity. However, since this is a phishing campaign requiring user interaction and no direct exploitation of software vulnerabilities, the overall risk is somewhat mitigated by user awareness and existing email security controls. The low severity rating suggests limited immediate impact but does not preclude targeted attacks or escalation if credentials are compromised.

1. Enhance user awareness training specifically addressing phishing threats, including the risks posed by decentralized hosting platforms like IPFS. 2. Implement and enforce multi-factor authentication (MFA) for all Office 365 accounts to reduce the risk of account compromise even if credentials are stolen. 3. Deploy advanced email filtering solutions capable of detecting phishing attempts, including heuristic and behavioral analysis that can identify unusual links such as those pointing to IPFS gateways. 4. Monitor for suspicious login activity and implement conditional access policies to restrict access based on risk factors such as location or device. 5. Establish incident response procedures for suspected phishing incidents, including rapid credential resets and forensic analysis. 6. Collaborate with threat intelligence providers to stay updated on emerging phishing campaigns leveraging decentralized hosting. 7. Consider blocking or monitoring access to known IPFS gateways if feasible within organizational policy, or use DNS filtering to detect and alert on IPFS-related domains. 8. Encourage reporting of suspected phishing emails by users to enable swift organizational response.