Firefox Uses New AI for Security

Apr 26, 2026, 05:16

Introduction

Firefox uses a new AI tool called Claude Mythos. This AI finds and fixes problems in the browser software.

Main Body

Firefox used an old AI before. That AI found 22 problems. The new AI is better. It found 271 problems. Bad people only need one mistake to hurt a system. The AI finds these mistakes quickly. It is faster than old tests. People used to check the code by hand. This took a long time. Now the AI does this work. The AI is as good as the best experts.

Conclusion

The AI found 271 problems. Firefox is now safer because the AI finds mistakes faster than people.

Vocabulary Learning

expert (n.)

specialist / a person with special knowledge專家

Example:My father is an expert at fixing cars.

mistake (n.)

error / something that is wrong錯誤；失誤

Example:I made a small mistake in my homework.

security (n.)

safety / protection from danger安全；保障

Example:The company improved its online security.

system (n.)

method / a set of things working together系統

Example:The school has a new computer system.

tool (n.)

instrument / something used to do a job工具

Example:A hammer is a common tool for building.

Sentence Learning

This AI finds and fixes problems in the browser software.

Connector & Preposition: The word 'and' joins two actions, and 'in' shows the location.連接詞與介詞: 'and' 一詞連接了兩個動作，而 'in' 則表示位置。

Firefox used an old AI before.

Time Marker: The word 'before' tells us when the action happened in the past.時間標記: 'before' 一詞告訴我們該動作在過去何時發生。

Now the AI does this work.

Time Marker: The word 'now' shows that the situation is currently happening.時間標記: 'now' 一詞表示該情況目前正在發生。

People used to check the code by hand.

Prepositional Phrase: The phrase 'by hand' describes the method used to complete the task.介詞短語: 'by hand' 短語描述了完成該任務所使用的方法。

Firefox is now safer because the AI finds mistakes faster than people.

Reason: The word 'because' explains the reason why Firefox is safer.原因: 'because' 一詞解釋了 Firefox 變得更安全的原因。