Firedancer-Ready Solana: 12 Security Hardening Patterns Your Anchor Program Needs Before the Validator Upgrade
rust
dev.to
The Validator Change That Breaks Your Security Assumptions Firedancer isn't just a performance upgrade. It's a fundamental change to how Solana processes transactions — and every security assumption baked into your Anchor program's architecture is about to be tested. Jump Crypto's C-based validator client introduces parallel transaction scheduling, different finality semantics, and new blockspace economics. Programs that worked safely under the original Agave validator may behave dif