DigiCert recently unveiled its latest Q4 2025 RADAR Threat Intelligence Brief, delving into the intricate relationship between the surge in global internet usage and the escalating cyber threats observed in the final quarter of the year. Drawing insights from a vast pool of security platform data, the report sheds light on the ever-evolving cyber landscape’s challenges and the resilience required to navigate it successfully.
The report uncovers a surge in online activities towards the end of the year, driven by various factors such as business cycles, consumer transactions, travel, and new device activations. This uptick in internet usage coincides with a noticeable rise in malicious activities, underscoring the importance of implementing robust security measures to combat these persistent threats.
Key Highlights from the Q4 2025 RADAR Brief:
- Increased Demand for Online Content: The report highlights a consistent growth in internet traffic, especially during major events, erasing traditional “off-peak” periods. Continuous internet scanning and system misconfigurations have resulted in elevated background “noise,” necessitating resilient systems capable of managing sustained demand without relying on intermittent recovery periods.
- Rising DDoS Incidents: DDoS attacks are evolving into longer, more severe disruptions, posing significant challenges to the resilience of digital infrastructures. The prolonged duration and scale of these attacks increase the risk of performance degradation and operational expenses, calling for continuous defensive actions.
- Targeted Application-Layer Threats: The prevalence of automated probing and testing in web application attacks highlights the meticulous search for vulnerabilities over time. These subtle yet potent attacks are difficult to detect, amplifying the risk of security breaches stemming from minor misconfigurations.
The report stresses the importance of building resilience to withstand ongoing demand and cyber threats across multiple fronts simultaneously. Michael Smith, DigiCert’s AppSec CTO, notes that emerging threats like the Aisuru and Kimwolf botnets further emphasize the need for organizations to fortify their defenses to meet heightened operational demands.
