This timeline of computer viruses and worms presents a chronological timeline of noteworthy computer viruses, computer worms, Trojan horses, similar malware, related research and events.

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Researchers Nassi, Cohen, and Bitton developed a computer worm called Morris II, targeting generative AI email assistants to steal data and send spam, thereby breaching security protections of systems like ChatGPT and Gemini. Conducted in a test environment, this research highlights the security risks of multimodal large language models (LLMs) that now generate text, images, and videos. Generative AI systems, which operate on prompts, can be exploited through weaponized prompts. For instance, hidden text on a webpage could instruct an LLM to perform malicious activities, such as phishing for bank details. While generative AI worms like Morris II haven’t been observed in the public, their potential threat is a concern for the tech industry.