Your firewall is supposed to be the thing that keeps attackers out. FortiBleed is the story of what happens when it becomes the way in.

In June 2026, roughly 86,644 sets of working Fortinet credentials turned up circulating among attackers across 194 countries. On June 18th, CISA issued an emergency advisory telling anyone running internet-facing Fortinet gear to terminate active sessions, rotate every credential, and turn on phishing-resistant multi-factor authentication immediately. This episode of Plaintext with Rich explains what FortiBleed actually is, why patching alone does not solve a credential-exposure incident, and what the difference between "patch" and "rotate" means for the people responsible for keeping a network safe. It also covers why a firewall breach lands differently than almost any other kind of breach, and what to check if you are worried someone already walked through the door before you changed the locks.

If you manage a team, own a business, or sit anywhere near a decision about network security gear, this one is directly relevant to your week. If you have no idea what a firewall does, that is fine too; the episode starts from the beginning.

One Topic, Ten minutes, No panic.

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