Fable 5.1 released, USPS "untested" IT, Exchange hijack vulnerability

Anthropic announces safety changes and new models USPS installs "untested" IT systems for mail-in ballots Thousands of Exchange servers vulnerable to hijacks Get the full show notes here: https://cisoseries.com/cybersecurity-news-fable-5-1-released-usps-untested-it-exchange-hijack-vulnerability/  Huge thanks to our episode sponsor, KnowBe4 [](https://www.knowbe4.com/ai-native-sat?utm_source=podcast&utm_medium=cybersecurityheadlines&utm_campaign=ainativesat) *Your employees have always been the target, but the threats they face are evolving. AI empowers cybercriminals to clone a coworker's voice, fake a video call with your CEO, or personalize a phishing email using details scraped from your own website.* *KnowBe4's AI-native Security Awareness Training (SAT) fights back with 12 autonomous defense agents that allow you to deliver personalized, relevant, and engaging training that adapts as fast as the threats your people face every day. More than 70,000 organizations trust KnowBe4 worldwide. Find out why at KnowBe4.com.*