New Java 17 features for improved security and serialization

This blog post examines Java deserialization risks and how Java 17 features — Records, context-specific deserialization filters via JEP 415 (SerialFilterFactory), and Java Flight Recorder deserialization events — improve the ability to detect and mitigate malicious deserialization and gadget-chain exploits, while recommending avoiding custom Java serialization when possible and upgrading to Java 17 to adopt these protections.