WatchGuard ® Technologies has released the findings of its latest Internet Security Report, a quarterly analysis detailing the top malware, network, and endpoint security threats observed by the WatchGuard Threat Lab researchers during the first quarter of 2025. The report's key findings reveal a 171% (quarter-over-quarter) increase in total unique malware detections, the highest the Threat Lab has recorded. Pair this with a significant increase in "zero day malware," and this signals a sharp rise in evasive threats designed to bypass signature-based detection—that is, traditional security systems that rely on patterns to detect threats. Notably, proactive machine learning (ML) detection offered by IntelligentAV (IAV) surged 323%, highlighting its critical role in detecting advanced malware.