The U.S. Cybersecurity Agency CISA Built Its Incident Playbook on the Fly — During the Incident Itself
There is a phrase every security professional knows by heart: "don't build the parachute while you're falling." The Cybersecurity and Infrastructure Security Agency, known as CISA, apparently never got that memo. As the agency itself has revealed, when a contractor accidentally uploaded a public GitHub repository packed with exposed passwords, CISA had no incident response playbook ready to execute. They had to write it on the spot, with the incident already in full swing. This is not an office joke or journalistic exaggeration: this is the federal agency responsible for protecting the critical infrastructure of the United States admitting that it improvised its own emergency protocol while fighting the fire.
The Incident That Exposed Everything
In May 2026, independent cybersecurity journalist Brian Krebs published a detailed report based on information provided by a security researcher from the firm GitGuardian. The finding was so basic it stings: an employee of a CISA contractor had uploaded a significant collection of plaintext passwords to a public GitHub repository. Not encrypted. Not hashed. Passwords. In a public repository. On GitHub.
GitGuardian, which builds tools specifically designed to detect this type of leak in public and private repositories, found it without much effort. Krebs published the story. And CISA, the agency that supposedly sets the standard for incident response across the private sector and government, had to sit down and write its own crisis playbook while the world was already reading about its blunder.
The Real Problem: Preaching Without Practicing
CISA is the entity that issues guides, alerts, frameworks, and cybersecurity best practices for organizations across the country. It is the one that tells the healthcare sector how to respond to ransomware, that advises municipalities on how to handle data breaches, that publishes the well-known Known Exploited Vulnerabilities catalog. And it turns out that internally, it had no documented procedure for what to do when something happens to itself.
This is not a minor detail. It is a systemic failure that speaks to an organizational culture where security processes are applied outward but not necessarily inward. It is the doctor who smokes. The dentist with cavities. But with potentially far graver consequences, because we are talking about the agency that coordinates the cyber defense of critical infrastructure: power grids, water systems, financial networks, telecommunications.
Contractors: The Weakest Link, As Always
The incident also shines a light on a recurring problem in the government security ecosystem: contractors. The mistake was not made by a direct federal CISA employee, but by someone working for a company contracted by the agency. This complicates the chain of accountability and, more importantly, the chain of training and oversight.
When an agency subcontracts sensitive technical work, the level of access that contractor has to critical systems and information can be equivalent to that of an internal employee, but the controls, security culture, and supervision are not always the same. This is not the first incident of this kind, nor will it be the last. The SolarWinds breach in 2020 also moved through the software supply chain. The contractor and third-party vendor vector remains one of the most exploited blind spots in institutional security.
What This Reveals About the State of Institutional Cybersecurity
The most revealing aspect of this story is not that the incident occurred, but what CISA admitted afterward: that they built the playbook during the incident. That implies that at some point someone made the decision not to document that process beforehand, or that nobody stopped to ask: "hey, what do we do if something happens to us?"
In the real world of security, the absence of a pre-established playbook has direct consequences: slower responses, inconsistent decisions, chaotic internal and external communication, and a higher probability of errors under pressure. All of which is exactly what CISA tells the rest of government and the private sector to avoid.
The irony is thick enough to cut with a framed cybersecurity certification hanging on the wall.
What Comes Next?
CISA now has that playbook. It arrived late, but it exists. The relevant question is whether this episode will translate into a genuine review of their internal operational security processes, or whether it will remain an awkward anecdote that nobody wants to bring up in meetings. Given the current political and budgetary climate in Washington, where federal agencies are operating under cuts and constant pressure, betting on deep internal reform requires an optimism the facts do not necessarily support.
What does remain clear for anyone working in security, whether at a mid-sized company in Monterrey or a startup in Mexico City, is that this incident confirms something many know but few want to admit: no organization is exempt, regardless of its mandate, its budget, or its name. And the first step toward protecting yourself is having the plan before you need it, not while you desperately need it.