The common first month mistakes are trying to fix everything, buying tools before knowing the problem, leaving alerts unowned, trusting a clean scan, ignoring account security, setting rules you cannot keep and never repeating the review. Each has a simple correction.
1. Trying to fix everything at once
The first scan returns a large number, and the instinct is to clear it. That blocks product work and gets abandoned. Group by package, handle exploited issues first and defer the rest with dates. See how to triage your first scan.
2. Buying before understanding
A tool bought before you know your gaps often duplicates what your code host already offers. Start with built in features, find the gaps, then evaluate. The post on free options by job lists them.
3. Alerts with no owner
Alerts that go to a shared channel everybody mutes are not a control. Name one owner and give each alert a decision. See who owns supply chain security.
4. Treating a clean scan as proof
A scanner matches your list against what it knows. A clean result means nothing known matched, and it says nothing about unknown flaws, malicious packages not yet reported or unsupported ecosystems. Pair it with controls such as locked installs and review.
5. Neglecting accounts
Teams spend weeks on scanners and leave write access accounts without two factor. An attacker with a developer account can publish or merge. npm documents 2FA as a second check for sensitive account actions, and it is a few minutes of work per person. Do it in week one.
6. Writing rules you cannot keep
A policy saying all critical findings are fixed in 24 hours looks good until the first Friday release. Missed rules damage trust in the whole policy. Choose deadlines you have actually met, then tighten them.
7. One and done
A first month burst without a repeat routine decays. A 30 minute monthly review with four numbers keeps it alive. See a monthly review agenda.
Summary table
| Mistake | Instead |
|---|---|
| Fix everything | Order by exploitation and reachability |
| Buy first | Use built in features, then find gaps |
| No owner | Name one and a backup |
| Trust clean scans | Add locked installs and review |
| Skip accounts | Two factor for all write access |
| Unkeepable rules | Set deadlines you have met |
| One and done | Monthly review |
A note on pace
A slower plan that continues beats a heroic first month. Small teams lose ground when a sprint of security work is followed by a long silence. Put the recurring slot in the calendar before you start.
Where to look for help
If you are unsure about an item, the NIST Secure Software Development Framework and the OpenSSF Scorecard checks offer public lists of practices you can compare against. Use them as reading, not as a compliance claim.
Safeguard supports the triage and gate steps with reachability analysis and policies. The free scan at https://gold.safeguard.sh/scan is a no commitment starting point.
Quick check
What is the single most common mistake?
Leaving alerts without an owner. Everything else is easier to fix once someone is responsible.
Is it a mistake to use a free tool?
No. Free tools are a good start. The mistake is running several that overlap and reading none of them.
Sources
Last reviewed: 19 October 2026.
