Microsoft 365 targeted due to its market dominance and complex attack surface
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Microsoft 365's widespread adoption has made it a prime target for cybercriminals. Its integrated suite of applications and over 400 million paid seats globally present a rich target environment. Attackers exploit its interconnected services to maximize impact, often using phishing and zero-day vulnerabilities. Recent vulnerabilities in SharePoint highlight the cascading risks, while backup systems often preserve malicious content, posing additional threats. Organizations must implement robust security measures to protect against these risks.
Timeline
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18.09.2025 17:02 📰 1 articles · ⏱ 1d ago
Zero-day in SharePoint exploited in July 2025
A zero-day vulnerability in SharePoint, CVE-2025-53770, was actively exploited from July 7, 2025, affecting over 75 servers. This incident underscores the cascading risks within the Microsoft 365 ecosystem, where compromising one service can provide access to others.
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- Target-rich environment: Why Microsoft 365 has become the biggest risk — www.bleepingcomputer.com — 18.09.2025 17:02
Information Snippets
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Microsoft 365 has over 400 million paid seats worldwide.
First reported: 18.09.2025 17:02📰 1 source, 1 articleShow sources
- Target-rich environment: Why Microsoft 365 has become the biggest risk — www.bleepingcomputer.com — 18.09.2025 17:02
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Microsoft 365's integrated suite of applications includes Outlook, SharePoint, Teams, and OneDrive.
First reported: 18.09.2025 17:02📰 1 source, 1 articleShow sources
- Target-rich environment: Why Microsoft 365 has become the biggest risk — www.bleepingcomputer.com — 18.09.2025 17:02
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Attackers exploit the interconnected nature of Microsoft 365 services to move laterally within compromised environments.
First reported: 18.09.2025 17:02📰 1 source, 1 articleShow sources
- Target-rich environment: Why Microsoft 365 has become the biggest risk — www.bleepingcomputer.com — 18.09.2025 17:02
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A zero-day vulnerability in SharePoint, CVE-2025-53770, was actively exploited in July 2025, affecting over 75 servers.
First reported: 18.09.2025 17:02📰 1 source, 1 articleShow sources
- Target-rich environment: Why Microsoft 365 has become the biggest risk — www.bleepingcomputer.com — 18.09.2025 17:02
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Standard Microsoft 365 backups often preserve malicious content, including phishing links and malware attachments.
First reported: 18.09.2025 17:02📰 1 source, 1 articleShow sources
- Target-rich environment: Why Microsoft 365 has become the biggest risk — www.bleepingcomputer.com — 18.09.2025 17:02
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40% of Microsoft 365 email backups contained phishing links, and over 200,000 backed-up emails had malware attachments.
First reported: 18.09.2025 17:02📰 1 source, 1 articleShow sources
- Target-rich environment: Why Microsoft 365 has become the biggest risk — www.bleepingcomputer.com — 18.09.2025 17:02
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Organizations must implement zero-trust architecture, multifactor authentication, and advanced threat protection across all Microsoft 365 applications.
First reported: 18.09.2025 17:02📰 1 source, 1 articleShow sources
- Target-rich environment: Why Microsoft 365 has become the biggest risk — www.bleepingcomputer.com — 18.09.2025 17:02