In 2021, the cybersecurity landscape was shaped by several significant developments. The ongoing COVID-19 pandemic heightened challenges for cybersecurity teams, as remote work increased the risk of phishing scams and necessitated enhanced endpoint monitoring. Insider threats, both malicious and unintentional, became more prevalent, with notable incidents like the data breach at Experian's Brazilian branch highlighting vulnerabilities in system configurations. The resurgence of trojan attacks, exemplified by the Solarwinds breach, underscored the dangers of supply chain attacks and the need for vigilant software management. Hybrid cloud adoption introduced new security risks as organizations sought to avoid vendor lock-in, while ransomware continued to dominate headlines with staggering financial impacts. The year ended with the discovery of the log4j vulnerability, prompting urgent security reviews and emphasizing the importance of rapid response capabilities. Despite these challenges, some companies successfully navigated the evolving threat landscape by leveraging observability platforms to maintain a comprehensive security overview.