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Security Guides

Is it safe to parse uploaded Excel or XML files with openpyxl or pandas?

openpyxl does not guard against billion laughs or quadratic blowup XML attacks by default. What to do with uploaded xlsx and XML files in data pipelines.

Oct 19, 20264 min read
Security Guides

How does .openapi-generator-ignore affect security fixes?

Files in the ignore file are skipped on regeneration, so template fixes never reach them. How to use it without freezing old bugs in place for good.

Oct 19, 20264 min read
Security Guides

What does an empty security array mean in OpenAPI?

In OpenAPI, security: [] on an operation removes the top level requirement, and an empty object makes auth optional. How to spot and review both.

Oct 19, 20263 min read
Security Guides

What should you check before adopting a new open source component?

A component intake checklist covers purpose, license, maintenance, known issues, provenance and ownership. Use it to decide in minutes, not weeks.

Oct 19, 20263 min read
Security Guides

One vulnerability in forty repos: how to group alerts into one task

When one flawed library appears in dozens of repositories, forty alerts hide one job. Group by advisory and package, assign one owner, track one fix.

Oct 19, 20263 min read
Security Guides

How should you write one ticket for a flaw in many environments?

One ticket per owning team, with a deployment checklist inside, beats one ticket per host. A template and rules for closing it honestly across sites.

Oct 19, 20263 min read
Security Guides

A shared runtime has a flaw: who patches the services that use it?

When a shared base image, layer or runtime is vulnerable, the platform team fixes the source and each service team still rolls it out. How to split it.

Oct 19, 20264 min read
Security Guides

How do three teams agree one severity scale and fix timeline?

Product security, platform and compliance should share one severity definition and one timeline table, plus a written rule for how exceptions are handled.

Oct 19, 20264 min read
Security Guides

One service, three patch layers: host, image and application

A containerised service has three places a vulnerability can hide: the host, the base image and the app dependencies. Learn who fixes each and how.

Oct 19, 20263 min read

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