Is Your Organization on the Dark Web?
Free instant scan across ransomware leak sites, hacker forums, and Telegram channels.
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Start Free TrialHow AdverseMonitor's Scanner Works
When you submit a domain or company name, the scanner runs a single read-only lookup against our index of dark web sources. There is no outbound traffic from your network, no probe of the actor's infrastructure, and no notification to anyone you searched. The result is whatever we already know about that string as of the last crawl, usually within the past hour.
What we check
Four source families cover most of where corporate exposure lives in 2026:
- Ransomware leak sites. Roughly 80 active blogs across LockBit, Akira, Play, RansomHub, BlackBasta, Qilin, and the long tail. A listing here means data has already been exfiltrated and the clock is ticking on payment.
- Hacker forums. BreachForums and its mirrors, XSS, Exploit, plus several Russian-language boards where initial access brokers post RDP, VPN, and admin-panel access for sale.
- Telegram channels. Combolist sellers, infostealer log markets (RedLine, Lumma, StealC), and access-broker channels. Telegram has overtaken classic forums for credential trading. We dug into that shift in a recent post on Telegram and Discord as the new dark web.
- Paste sites. Pastebin, DPaste, GitHub Gists. Often the first place a fresh dump appears, sometimes for only a few hours before takedown.
What the free scan will not tell you
The free version returns a count by category. It does not return the underlying URL, the post body, the actor handle, the affected credentials, or the leak-site sample tree. Those live behind the paid product because they are operationally sensitive (and because publishing them at scale would help the actors). The free scan is also rate-limited to three queries per IP per day to keep the index responsive for serious users.
What a positive hit actually means
A non-zero result is not the same as "you have been breached today." Three common patterns:
- Third-party credential exposure. Most common. An employee reused their work password on a site that was breached two years ago, and the combo now sits in an infostealer log. Rotate the password, check SSO logs.
- Forum chatter. Someone is asking about your company, posting an org chart, or shopping access. This is reconnaissance and a strong signal to tighten controls before something happens.
- Leak-site listing. A ransomware crew has named you. This is an active incident regardless of whether you have noticed encryption yet, and you should be on the phone with counsel and IR within the hour.
If you want help reading the result, our breakdown of the ten signs your company data is on the dark web walks through the indicators by severity.
Frequently Asked Questions
How is the free scan different from your paid monitoring?
The free scan is a point-in-time lookup against our existing index. Paid monitoring runs continuously, alerts you within minutes of a fresh hit, and returns the underlying evidence (paste URLs, leak-site posts, credential samples) instead of just a category count. Free scans are also capped at three per IP per day.
Which sources does the scanner check?
Ransomware leak sites (about 80 active blogs), hacker forums (BreachForums, XSS, Exploit, plus several Russian-language boards), Telegram channels used by access brokers and combolist sellers, and paste sites (Pastebin, DPaste, GitHub Gists). Posts go back to 2021 and the index updates on a 15-minute to 4-hour cadence by source.
Will my domain be flagged as suspicious if I scan it?
No. The query hits our index, not the threat actor sites. There is no outbound traffic from your network at scan time and nothing for an attacker to observe. We log the query for rate-limiting only.
What do I do if the scan finds my organization?
Do not pay anyone. A hit usually means a credential reuse from a third-party breach, a forum mention (reconnaissance), or a leak-site listing (active incident). Start a trial to see the evidence, rotate exposed credentials, audit SSO and VPN logs going back 90 days for the affected accounts, and pull our breach response playbook.
How current is the data?
Ransomware leak sites and Telegram channels re-crawl every 15 minutes. Forums update every 1 to 4 hours. Paste sites stream in real time. A free-scan result reflects the index as of within the last hour for high-priority sources.
Can I scan a domain I do not own?
Yes. The scanner is read-only and only checks publicly indexed mentions. Security researchers, M&A diligence teams, and journalists use it routinely to vet third-party vendors and acquisition targets.