Microsoft 365 Vulnerabilities: Risks and Protection Strategies

Microsoft 365 offers powerful cloud productivity tools, but its widespread use makes it a prime target for cyber threats. Common vulnerabilities include phishing attacks, weak access controls, misconfigured permissions, and insufficient data loss prevention. Organizations must implement robust security practices like multi-factor authentication, regular audits, and real-time threat detection to protect sensitive information. Keeping software updated, educating users on social engineering tactics, and leveraging Microsoft’s built-in security tools are essential steps to reducing exposure. As remote work continues to grow, addressing Microsoft 365 vulnerabilities becomes critical to safeguarding business continuity and maintaining regulatory compliance in today’s evolving threat landscape.

“Cookie Bite” Entra ID Attack Exposes Microsoft 365

“Cookie Bite” Entra ID Attack Exposes Microsoft 365: A Critical Cloud Security Wake-Up Call

Ravi Jain
“Cookie Bite” attack, a novel method where malicious browser extensions steal authentication cookies like ESTSAUTH and ESTSAUTHPERSISTENT from users of Microsoft 365 and Azure Entra ID. By leveraging these cookies, attackers can bypass Multi-Factor Authentication (MFA) and hijack legitimate sessions, gaining unauthorized access to services like Outlook, Teams, and SharePoint. This attack is particularly dangerous because it operates within the browser and does not require system-level compromise, making it difficult to detect through traditional security measures. The article highlights the risks of this attack, including data exfiltration and internal impersonation, and outlines mitigation strategies such as monitoring risk-based sign-ins, implementing browser-level protections, and limiting session persistence. It also introduces Technijian's security services as a solution to protect against this and similar threats. ... Read More