The Growing Threat of MFA Bypass

Multi-Factor Authentication (MFA) adds a critical layer of security, but it’s not foolproof. Cybercriminals are developing sophisticated techniques to bypass MFA using phishing kits, session hijacking, token theft, and social engineering. These attacks often trick users into revealing credentials or intercepting authentication codes. As MFA bypass threats grow, organizations must go beyond basic protections by implementing conditional access policies, monitoring for unusual sign-in behavior, and using phishing-resistant MFA methods like hardware tokens or biometrics. Regular employee training and layered security strategies are essential to minimize exposure. Staying ahead of attackers requires constant vigilance and a proactive cybersecurity approach.

“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