What is a false positive on a security vendor blacklist?

A false positive is when a security vendor such as Google Safe Browsing, VirusTotal, Fortinet FortiGuard, or Sophos incorrectly classifies a legitimate domain as malicious, phishing, or spam. This triggers browser warnings, firewall blocks, and email filtering that prevent users from reaching your website — despite no actual threat being present.

How do I remove my domain from a security blacklist?

Each security vendor has a different false positive submission process. You must identify the correct channel, prepare evidence of legitimate domain use, submit a formal delisting request, and follow up persistently. BrandsDefender handles this entire process across 87 vendors including Google Safe Browsing, VirusTotal, Fortinet, Sophos, Kaspersky, and ESET.

How long does domain blacklist removal take?

Most false positive delistings are resolved within 24–72 hours. Google Safe Browsing typically responds within 24 hours of a correct review request. Fortinet FortiGuard and Sophos usually respond within 48–72 hours. Complex cases involving upstream feed propagation can take up to 7 days. BrandsDefender's average resolution time is 48 hours.

What is the no cure, no pay guarantee?

BrandsDefender only charges for confirmed successful delistings. If a security vendor refuses to remove the flag despite our best efforts, you pay nothing for that case. This applies to both one-time cases and subscription plan case credits.

Which security vendors do you handle delisting from?

BrandsDefender handles delisting from 87 security vendors including Google Safe Browsing, VirusTotal, Fortinet FortiGuard, Sophos, Kaspersky, ESET, Bitdefender, McAfee WebAdvisor, Cisco Talos, Symantec/Broadcom, Webroot BrightCloud, PhishTank, URLhaus, Netcraft, MalwarePatrol, Sucuri, and many more.

Why does a Lumu flag generate security alerts at my customers' companies?

Lumu alerts on every contact their clients' networks make with flagged domains. If your domain is in their threat intelligence, any employee at a Lumu-protected enterprise who visits your site — including to make a legitimate purchase — generates an active compromise alert.

What intelligence sources does Lumu use?

Lumu aggregates from a wide range of third-party threat intelligence feeds in addition to their own research. Our team identifies the upstream feed sources contributing to the flag and manages removal from each.

How long does removal take?

Most cases are resolved within 24–72 hours. Complex cases involving upstream feed propagation can take up to 7 days. We keep you updated throughout.

What is the no cure, no pay guarantee?

If we can't get your domain delisted, you pay nothing. We only charge on confirmed removal.

What if the same vendor re-flags my domain?

If the same vendor re-flags within 30 days of confirmed removal and nothing changed on your side, we handle the re-submission at no extra charge.

Do you need access to my website?

No. We work entirely through vendor channels. You just provide your domain and any context about recent changes.

Security Flag Detected

Remove Your Domain from Lumu

Lumu is detecting compromise through your domain. We handle the removal.

Read DIY Removal Guide

Response time: 2-7 business days

Difficulty: Moderate

No cure, no pay

About the vendor

What is Lumu?

Lumu Technologies provides a Continuous Compromise Assessment platform that monitors network DNS and traffic to detect connections to known malicious infrastructure. Their platform is used by enterprises to measure and quantify their own compromise in real time. When your domain appears in Lumu's threat indicators, it generates active compromise alerts inside every enterprise running the Lumu platform — signalling to security teams that their network has contacted a malicious domain.

Lumu's model alerts on every network contact with a flagged domain. A listing means that whenever any employee at a Lumu-protected enterprise visits your site — even accidentally — it generates a compromise alert in their security operations centre, associating your domain with active threat activity.

Common causes

Why was your site flagged?

Your domain appeared in threat intelligence feeds consumed by Lumu's detection engine
Network traffic patterns associated with your domain matched command-and-control communication signatures
Your domain was listed in one or more of the third-party threat feeds aggregated by Lumu
Your hosting IP or AS was associated with infrastructure used in active threat campaigns
A DNS query pattern to your domain triggered Lumu's compromise detection heuristics

Complete removal guide

How to remove your domain from Lumu

Follow these steps to submit a false positive report yourself. This is a complete, expert-level walkthrough of the Lumu delisting process.

Expected time: 2-7 business daysDifficulty: ModerateAccount required: No

What you will need

Domain URLClean scan resultsBusiness descriptionOwnership verification

Confirm Lumu is flagging you

Scan your domain on VirusTotal.com and check whether Lumu specifically shows a detection. Note the exact classification label (phishing, malware, suspicious, etc.) — this determines which submission path to use and how to frame your evidence.

Thoroughly audit your website

Before claiming a false positive, verify your site is genuinely clean. Check for injected scripts, compromised plugins, hidden iframes, unauthorized redirects, malicious file uploads, and outbound links to flagged domains. If your site was genuinely compromised, clean it before reporting to Lumu.

Check your source code, server access logs, CMS plugin list, and all third-party scripts. A single overlooked compromise will cause your dispute to be denied.

Gather supporting evidence

Collect clean scan results from other major security vendors (Google Safe Browsing, VirusTotal aggregate), screenshots of your legitimate content, your business registration details, domain WHOIS history, and documentation of any recent security hardening measures.

Submit a false positive report to Lumu

Visit Lumu's official false positive or dispute submission portal. Provide your domain URL, explain your business purpose, describe why the flag is incorrect, and attach your clean evidence. Use a professional email address matching your domain for implicit ownership verification.

Response times vary by vendor. Lumu typically responds within the stated timeframe if your submission is complete and well-documented.

Track your submission and follow up

Save any ticket or reference numbers provided. If you haven't received a response within the stated timeframe, follow up politely referencing your original submission. Re-check VirusTotal after receiving confirmation to verify the flag is cleared.

Verify removal and monitor for recurrence

After confirmation, re-scan your domain on VirusTotal to verify Lumu's detection is cleared. Set up ongoing monitoring to catch any future flags early — recurrence within 30 days is common if the underlying trigger isn't fully addressed.

What happens after removal

Once Lumu confirms removal, the update propagates to all their products and any downstream consumers of their threat data. Propagation typically takes 24-48 hours for full global coverage. VirusTotal results update on the next rescan.

Want this handled in 24-72 hours instead?

Our team has resolved thousands of Lumu flags. We know the fastest paths, the right contacts, and exactly how to document your case.

Expert knowledge

Pro tips & common mistakes for Lumu removal

Pro tips

Submit from a professional email address matching your domain — this implicitly proves ownership and gets faster processing.
Include clean results from other major vendors to demonstrate the Lumu detection is an outlier.
If affected customers report the block, ask them to note the exact error message — this helps identify the specific product flagging you.
After clearance, request a fresh VirusTotal rescan to update the aggregated results immediately.

Common mistakes to avoid

Submitting before fixing genuine issues — vendors re-scan during review and deny requests for actually-infected sites
Using generic email addresses (Gmail, Yahoo) instead of domain-matching professional email
Providing vague explanations like "my site is legitimate" without specific evidence or business context
Not checking all URL variations (www vs non-www, HTTP vs HTTPS, specific paths vs root domain)
Resubmitting too frequently before the stated response time has elapsed

Our service

Or let BrandsDefender handle Lumu for you

Skip the research and back-and-forth. Our experts resolve Lumu flags in an average of 24-72 hours.

Submit your case

Tell us your domain and the flagging vendor. We review the listing and confirm it qualifies for removal.

We handle the dispute

Our team prepares the evidence package and submits a formal delisting request through the correct vendor channel.

Confirmed delisting

We monitor for confirmation and notify you when the flag is cleared. You don't pay until we succeed.

Pricing

One-time case or ongoing protection

Fix the immediate Lumu flag, or protect your domain across all 87 vendors we support.

One-Time Case

€39/ vendor

Remove your flag from Lumu specifically. Pay only on success.

Questions about Lumu delisting

Ready to remove your Lumu flag?

Our team starts within hours. You only pay when the flag is confirmed cleared.

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