Mozilla Firefox recorded a massive surge in security bug fixes during April 2026 after the AI system Claude Mythos reportedly helped identify and resolve a large number of vulnerabilities.
According to the data, Firefox fixed 423 security bugs in April alone, exceeding the total number of fixes recorded over the previous 15 months combined.
The development highlights the growing role of artificial intelligence in cybersecurity and vulnerability detection, particularly as modern software systems become increasingly complex.
It also underscores a broader shift in software development workflows, where AI systems are beginning to play a direct role in improving code quality and accelerating security auditing at unprecedented scale.