Microsoft was the most impersonated brand in phishing attacks during the final quarter of 2025, according to data cited by cybersecurity researchers. The findings show that attackers increasingly use Microsoft branding in fraudulent emails and websites designed to steal login credentials and other sensitive information.
The data indicates that Microsoft overtook other well-known brands that had previously dominated phishing activity. Researchers said the shift reflects how frequently Microsoft services are used for email, file storage, and workplace collaboration, making the brand familiar to a wide range of users and therefore more effective for deception.
Phishing attacks typically involve messages that appear to come from trusted organisations and prompt recipients to click links or enter account details. In campaigns using Microsoft branding, attackers often mimic login pages for services such as Outlook or cloud-based productivity tools. These pages are designed to closely resemble legitimate interfaces to reduce suspicion.
Cybersecurity analysts noted that impersonation of technology providers remains a consistent trend because a single stolen account can provide access to email, documents, and additional services. This makes Microsoft accounts a valuable target for attackers seeking to expand access or launch further attacks.
The findings also show that brand impersonation continues to be a central technique in phishing rather than technical exploitation. By relying on trust in widely used services, attackers can achieve results without deploying complex malware or exploiting software vulnerabilities.
Researchers said the data aligns with patterns observed earlier in 2025, when Microsoft frequently appeared among the top brands abused in phishing campaigns. The increase toward the end of the year placed it ahead of social platforms and other consumer services that had previously been common targets.
Security specialists advise users to remain cautious when receiving messages that claim to be from major technology companies and request urgent action. They recommend checking website addresses carefully and avoiding links in unsolicited messages that prompt login requests.
The report highlights how brand recognition continues to play a key role in phishing activity, with attackers adapting their tactics to exploit services that are deeply embedded in daily personal and professional use.