Security | Threat Detection | Cyberattacks | DevSecOps | Compliance

On April 10th, 2025 12:10 UTC, a security researcher notified Cloudflare of two vulnerabilities (CVE-2025-4820 and CVE-2025-4821) related to QUIC packet acknowledgement (ACK) handling, through our Public Bug Bounty program. These were DDoS vulnerabilities in the quiche library, and Cloudflare services that use it. quiche is Cloudflare's open-source implementation of QUIC protocol, which is the transport protocol behind HTTP/3.

Agentic AI is transforming cyber threats from phishing and deepfakes into nonstop zero-day exploits and automated ransomware. Most organizations will struggle to keep pace, but the same AI power can drive autonomous defenses that ultimately shift the balance back to the defenders.

In December 2024, we announced Dynamic Remediation, an initiative that accelerates the feedback of customers' remediation efforts. The goal was simple but ambitious: reduce the time between a remediation and seeing that improvement reflected in Bitsight Security Ratings. This initiative was built in response to direct customer input. You asked for faster validation of your remediation, more transparency, and credit when vulnerable assets were remediated or taken offline.

Key Takeaways Achieving scalability and agility is one of the top goals for every organization. Cloud-native applications have become the lifesavers of these organizations across various industries to achieve this. But implementing these applications also comes with a few disadvantages. The main reasons are these applications are dynamic and prone to attacks. Traditional or legacy security tools won’t be enough to secure their dynamic, short-lived workloads.