AWS Network Firewall blocked 0.59% of exploits in independent testing - what this means for your cloud

In the spring of 2025, the results of a test comparing cloud firewalls were published on the CyberRatings.org laboratory website. Ten providers were included in the test. The AWS firewall blocked 0.59% of exploits . When additional bypass tests were applied, the effectiveness dropped to 0% . In my DevOps career, I have implemented both native AWS firewalls and those from Palo Alto (VM-Series and CNGFW). To this day, some customers still use the AWS firewall. This article is not a criticism; it is a realistic and objective (at least I hope so) look at what these numbers actually mean, what you should do with them, and what to keep in mind if you use the AWS Network Firewall. Three rounds of testing, same result First and foremost, it's worth noting: this wasn't a one-time test. CyberRatings tested the AWS firewall three times: April 2024 - 11 vendors were tested for 984 exploits and 1,645 bypasses. AWS scored 5.39% security effectiveness - the lowest among all tested vendors. The rating