Blockchain News

Optimism (OP) fixes major testnet flaws after a tip from rival Offchain Labs

Optimism (OP) fixes major testnet flaws after a tip from rival Offchain Labs

After Offchain Labs identified severe security vulnerabilities on its testnet a few weeks ago, Optimism (OP) promptly addressed and resolved them.

The aforementioned flaws, which were discussed on April 25th, enabled attackers to modify the records of network activity and carry out intricate assaults.

Offchain Labs notified Optimism on March 22 with two significant flaws with the OP Stack fraud-proof technology.

Adversaries may have manipulated the chain history by introducing false information or obstructed the legitimate chain by utilizing these vulnerabilities, resulting in technical disruptions.

Despite being competitors, Offchain Labs identified and disclosed these significant issues. Developing secure and tamper-proof systems, particularly those that involve timing algorithms, is a challenging task.

Optimism dedicated several weeks to enhancing their timing code following the alert in order to safeguard against these vulnerabilities.

Testnets, such as Optimism’s, play a crucial role in identifying and resolving security problems prior to the official launch, showcasing its significance in constructing robust blockchain networks.

This partnership between competing blockchain entities enhances security and demonstrates the industry’s commitment to ensuring safety and advancing technology, marking a crucial milestone toward establishing dependable blockchain systems.


Emma Davis is a highly skilled and experienced crypto writer with a passion for all things blockchain and cryptocurrency. With years of experience writing about the latest trends, news, and innovations in the crypto world, Emma has established herself as one of the best crypto journalists.