perl-security

Overview of perl-security skill

What perl-security is for

The perl-security skill is a practical guide for writing and reviewing Perl code with fewer injection and data-handling mistakes. It is most useful when you need a perl-security skill for Security Audit work, are hardening a web app, or are checking whether user-controlled data can reach the shell, filesystem, SQL, or HTML output unsafely.

What it helps you decide

This skill is strongest when you need to move from “this Perl code works” to “this Perl code is safe to ship.” It focuses on the places where Perl applications usually fail security review: taint mode, input validation, safe process execution, DBI placeholders, and web-layer protections like XSS, SQLi, and CSRF.

Why it differs from a generic prompt

A generic prompt may mention “secure Perl,” but perl-security gives you a concrete security workflow: start with taint-aware boundaries, constrain untrusted data early, and use safe defaults instead of ad hoc fixes. That makes the perl-security usage more reliable for audits, code review, and remediation planning.

How to Use perl-security skill

Install and locate the core guidance

Use the perl-security install flow from your skills manager, then open skills/perl-security/SKILL.md first. If you are checking how the skill is framed, read the whole top section before jumping into examples; the activation criteria and taint explanation tell you when the skill is actually applicable.

Turn a vague request into a useful prompt

Give the skill the code path, framework, and risk surface, not just “make this secure.” Strong input looks like: “Review this Mojolicious route that reads param('file'), runs a shell command, and writes to DBI; identify taint issues, unsafe exec usage, and whether placeholders are used correctly.” That is much better than “audit my Perl app.”

Use it with the right workflow

For best perl-security usage, ask for a staged review: first identify untrusted inputs, then trace propagation, then list concrete fixes. This skill works best when you want a Security Audit lens, because it helps separate real exploit paths from stylistic concerns. If your code never touches user input, shells, files, or SQL, the skill is probably overkill.

Read the repository in the right order

Start with SKILL.md, then inspect any linked examples or nearby repo context if present. In this repository, there are no extra support folders to rely on, so the main value comes from reading the skill text carefully and applying it to your target codebase rather than expecting a larger rule set.

perl-security skill FAQ

Is perl-security only for audits?

No. The perl-security skill is useful for audits, but also for secure feature development, refactors, and pre-release checks. It is most valuable when you want to prevent common Perl security issues before they reach review.

Does it replace a manual code review?

No. It improves the review process by focusing attention on taint boundaries, unsafe process calls, and DBI usage, but you still need to confirm how your application actually handles inputs, deployment flags, and framework behavior.

Is this beginner-friendly?

Yes, if you can read Perl and follow a security checklist. The skill is more about disciplined thinking than advanced cryptography. Beginners get the most value when they ask for one bounded task at a time, such as “check this file for unsafe command execution.”

When should I not use it?

Skip it if you are not dealing with external input or if your task is unrelated to Perl security. If the request is about formatting, business logic, or general Perl syntax, a security-focused skill will add noise rather than help.

How to Improve perl-security skill

Give the skill the exact trust boundary

The biggest quality gain comes from naming where data enters the system: CLI args, CGI params, headers, files, environment variables, or database content. The perl-security skill can only reason well about security when you identify the source and the sink.

Ask for exploit paths, not just fixes

Better perl-security guide requests ask for both risk and remediation. For example: “Show how system, backticks, or interpolated SQL could be abused here, then rewrite the code using safe alternatives.” That produces more actionable output than a generic “secure this code” request.

Provide framework and runtime constraints

Mention whether you use Mojolicious, Dancer2, Catalyst, CGI, or plain Perl, and whether taint mode is enabled. Those details change what a safe fix looks like and prevent advice that conflicts with your deployment model.

Iterate on the first answer

If the first result is too broad, narrow it to one class of issue: input validation, file handling, shell execution, or DBI queries. The best perl-security results usually come from short follow-up prompts that ask for exact code changes, safer patterns, and a second pass over the same file.