Brute force attacks, a longstanding online threat, involve attackers using automated systems to repeatedly guess passwords or login credentials until they gain unauthorized access to accounts. These attacks exploit weak passwords, with common choices like "123456" contributing to their success, and are often effective due to poor password practices and the fact that 85% of people reuse passwords across multiple services. Notable incidents include the breaches at Dunkin’ Donuts, Alibaba, and Microsoft, highlighting the importance of robust security measures. Businesses can protect against brute force attacks by implementing strong password policies, multi-factor authentication (MFA), account lockouts, rate limiting, and device intelligence systems like Fingerprint, which assigns unique identifiers to detect suspicious activities and differentiate legitimate users from bots. By combining these strategies, companies can safeguard user accounts and sensitive data, maintaining customer trust and mitigating financial and reputational damage from such attacks.