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After Sam Altman trash-talked Anthropic for gatekeeping<\/a> its cybersecurity tool Mythos by only releasing it to select users, he confirmed that OpenAI would be doing the same with its competing tool, Cyber.<\/p>\n Altman said in a post on X<\/a> on Thursday that OpenAI will begin rolling out GPT-5.5 Cyber \u201cto critical cyber defenders\u201d in the next few days. OpenAI has an application on its website where people submit information<\/a> about their credentials and planned use in order to gain access.<\/p>\n Cyber can perform such tasks as penetration testing, vulnerability identification (and exploitation), and malware reverse engineering, the application implies. It\u2019s intended to be a toolkit to help a company find security holes and test defenses. The fear is that the kit could be misused by the bad guys.<\/p>\n When Anthropic similarly restricted access to Mythos, Altman called the tactic fear-based marketing<\/a>. Some critics also thought so, saying\u00a0Anthropic\u2019s rhetoric was overblown<\/a>. Ironically, an unauthorized group reportedly managed to gain access to Mythos anyway<\/a>.<\/p>\n OpenAI says it\u2019s working to make Cyber more widely available by consulting with the U.S. government and identifying more users with legit cybersecurity credentials<\/a>.<\/p>\n<\/div>\n