SNACK Summary in Three Lines
- On June 10, GitHub added the
/security-reviewcommand to Copilot CLI as a public preview. You can now run a security check on local changes inside the terminal before moving on. - GitHub says it focuses first on high-risk vulnerabilities such as injection, XSS, insecure data handling, path traversal, and weak cryptography. However, it is not a replacement for Code scanning, Dependabot, or secret scanning.
- Put simply, it feels close to running one more security spell-check in the terminal before opening a PR. It is fast, but it should also be viewed as an experimental feature for now.
Snackgirls Editorial Notes
AIKO: “This update gives developers one more question to ask after writing the code and right before putting it on Git.”
Red: “The important order is not ‘AI checked it, so we’re done,’ but ‘AI roughly filters it first, then a human finishes the review.’”
Nea: “It is an experimental feature, so it should not be overtrusted, but the habit of quickly sniffing out security smells right inside the terminal should definitely become more convenient.”
What changed?
According to the GitHub changelog, Copilot CLI can now review current local changes with the /security-review command. The usage conditions are relatively simple too. Turn on experimental mode in Copilot CLI, then run the command inside the project.
In other words, before moving to an IDE security extension or a server-side static analysis dashboard, developers now have one more review layer inside the terminal workflow where they are already working.
What does it look for?
GitHub explains that this command focuses first on common but high-impact vulnerabilities such as injection flaws, cross-site scripting, insecure data handling, path traversal, and weak cryptography. The results are not just simple warnings either; they also return actionable suggestions with severity and confidence levels.
That said, its scope should not be overstated. This feature is closer to a quick pre-check for the code currently being modified, and it does not replace tools that manage the security state of an entire repository over time.
Why does it matter?
From a developer’s point of view, the later a security check happens, the more expensive fixes become. So the core value of this feature is less about detection accuracy alone and more about making checks much easier to run early, almost as a habit.
For general readers, it is similar to running a spell-checker one more time right before submitting a document. It may not be a perfect proofread, but it increases the chance of catching small yet critical mistakes first.
What still needs caution?
GitHub itself defines this feature as an experimental public preview. That means the scan result should not be treated like deployment approval, and it should be used alongside existing Code scanning, Dependabot, and secret scanning.
In short, this update is less about “handing security checks over to AI” and more about adding a faster security rehearsal inside the development flow.
Sources and checked date · Published 2026-06-10 / Checked 2026-06-11T01:18:34+00:00
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