Fly.io experienced a phishing attack that compromised their Twitter account, highlighting vulnerabilities due to outdated security practices and a lack of phishing-resistant authentication. The attack stemmed from a well-crafted phishing email targeting CEO Kurt Mackey's insecurities, leading him to inadvertently share credentials. Although the breach caused temporary loss of account control and brand damage, no sensitive user data was at risk. Fly.io emphasizes the importance of adopting modern security measures like phishing-resistant multi-factor authentication (MFA) and single sign-on (SSO) to prevent such incidents in the future. The company's relaxed tone indicates the incident's limited impact, and they use it as a learning opportunity to improve their security practices while humorously reflecting on their social media strategy.