False Positives and False Negatives in Link Safety
Why security tools can over-warn or miss threats, and why results should be treated as risk signals.
Two types of mistakes
A false positive happens when a safe or acceptable link is flagged as risky. A false negative happens when a risky link is not flagged. Both are normal challenges in security tools.
Why false positives happen
Marketing redirects, short links, new domains, and unusual but legitimate hosting can look suspicious without being malicious.
Why false negatives happen
New phishing pages, quiet infrastructure, and clean-looking HTTPS sites can avoid obvious signals for a while.
How to respond
Treat verdicts as decision support. If a link affects sensitive information or business workflows, verify through official channels or request manual review.
How CheckLink helps
CheckLink explains signals so users can see why a verdict appeared and avoid treating any score as absolute proof.
Checklist
FAQ
Can CheckLink be wrong?
Yes. Any scanner can miss things or flag harmless patterns. That is why CheckLink uses disclaimers and manual review paths.
What is the safest interpretation?
Use the result as a risk signal, then verify context before high-stakes action.
Related guides
Related glossary terms
Use CheckLink before the next click
CheckLink provides risk signals and review paths. It does not guarantee that a website is risk-free.