Tried doing a security code review on our own codebase and hit a wall — what are the common traps?

Dial in your taint analysis settings properly in your static analysis tools. Trace untrusted user parameters from the input point all the way to database queries or system commands to see if they're properly sanitized. Turn off rules that flag every single string concatenation as an SQL vulnerability, and you'll clear out at least two-thirds of the noise right off the bat.

Having developers without security training review their own code for security is just going through the motions. The person who wrote the code won't spot their own design flaws. If your budget is tight, getting a focused 2-3 day external audit just for the auth and payment modules, rather than the entire system, is way cheaper and far more effective.

Don't make the mistake of reviewing 12,000 lines all at once again. Break down security reviews into PRs. Keep it under 300 lines of code per merge and stick to just 5 critical security items on the checklist. Have them look at it while the code is being written, not at the end of the sprint.

We got 410 warnings on our first scan. The whole team struggled with it for two weeks. Then we configured the security filter just for the top 10 most critical web vulnerabilities, and the count instantly dropped to 19. And out of those 19 findings, only 4 actually carried real risk and needed fixing.

automated tools dont understand what the code actually does they just match patterns... tbh if youre using parameterized libraries for your db queries youre already eliminating most of the sql injection risk anyway, dont obsess over every single tool warning for nothing.

On our first product, we spent days with the team debating complex regex validation rules, congratulating ourselves on doing a secure code review. Three days after going live, a client changed the ID in the URL parameter and pulled up another company's financial report. These business logic flaws are precisely what the tools miss.

You've fallen into three classic traps: 1) Taking tool output as absolute truth and wasting hours on false positives, 2) Making security reviews feel like a developer performance review, which triggers defensiveness, 3) Confusing code style with actual security vulnerabilities.

The takeaway from all this: raise the alert threshold on automated scanners to cut down the noise, break reviews into smaller chunks, and test authorization logic flaws that tools can't catch using manual scenarios.

i was thinking the same thing and when we decide without measuring, we always end up in the same place.

any unwritten clause becomes a pint of disagreement later as both sides remember it differently then just leaving this note it might be useful.

The opposite happened to me, that's why I'm writing. Security isn't absolute; it's about making attacks not worth the effort.

Of course, it varies if your situation is different.

i agree.

Quick summary for newcomers: Payment information changes are never verified through the channel they came from.

Security isn't absolute; it's about making attacks not worth the effort. Good luck with that.

Here's how it went for us. An untested backup is not a backup.

If you post the result here, it will help others too.

You're right, I've been down that road too. People defend habits, not processes. Resistance comes from there.

Good luck with that.

I completely agree. When making decisions, write down the worst-case scenario too, not just the best.

If you have questions, write them; I'll answer as best I can.

Let me summarize the topic, since several different answers were given. People defend habits, not processes. Resistance comes from there.

i'm in the same situation, that's why I'm asking... if it's your first time, start small; scaling comes later.

if you scold false alarms nobody will report again then this is my opinion, I'm not claiming it's absolute truth.

Don't miss this: Most time waste accumulates in tasks waiting for approval.

Start with a small trial; don't commit to everything at once. anyway good luck with that.