← Back to PeopleBGEngineerBrian GrinsteadDistinguished Engineer at MozillaWebsiteBrian Grinstead is a distinguished engineer at Mozilla working on Firefox and the web platform.1Mentions1Articles1OutletsCompanies CoveredAnthropic1Mozilla1Writes AboutFrederik BraunEngineer1 articleChristian HollerEngineer1 articleArticlesMost recent firstMentioned InReferenced in coverageMozilla published a blog about using Claude Mythos Preview for securityMozillapositiveMay 8, 2026“Byline author of Mozilla blog post about using Claude Mythos Preview to identify and fix security bugs in Firefox.”