No threats detected
All checks passed. This site appears legitimate — but always stay alert for phishing even on trusted domains.
Is eso.bg legit or a scam?
This looks safe to use.
Official Bulgarian electricity grid operator site with clean security signals and verified business registration.
Analysis Summary
Website Preview

Automated page render — captured in a safe sandbox. What an ordinary visitor would see when loading the site.
Visual analysis
We capture a fresh screenshot of the live page and ask a vision model to look for scam visual patterns — fake trust badges, countdown timers, overlay pop-ups, and visual clones of legitimate brands.
Visual red flags detected in the screenshot
The page appears to be a legitimate corporate website for a national utility provider, displaying professional data visualizations and standard navigation.
What our vision model saw
5 signalsProfessional corporate header with functional navigation and search feature
Real-time data visualization including power load charts and generation pie charts
High-quality, relevant imagery of electrical infrastructure
Consistent branding for the Bulgarian Electricity System Operator (ESO)
Clean, professional layout with no intrusive elements or urgency tactics
Intelligence
The page presents itself as the corporate site for Elektroenergien Sistemen Operator EAD, Bulgaria's state electricity transmission operator. Our antivirus network returned zero detections across 93 engines and the hosting IP carries no abuse reports. The domain matches the officially registered company incorporated in 2007 with an active 35-year transmission license. Visual analysis confirms professional corporate design, real-time grid data, and consistent branding with no urgency tactics or login forms. No scam reports or complaints appear in our research, and the site loads legitimate external resources typical of a national utility.
Web Research Findings
Our live research agent queries scam-report databases, consumer-review sites, news coverage, and general web search for eso.bg, then cross-checks business-registration records and look-alike domain patterns. Everything below is pulled from what it actually found.
- The domain eso.bg is the official website of Elektroenergien Sistemen Operator EAD, the state-owned independent transmission system operator of Bulgaria.
- The company is a subsidiary of the Bulgarian Energy Holding EAD and was incorporated on January 4, 2007.
- ESO EAD holds a 35-year electricity transmission license (No. Л-419-04/18.12.2013) issued by the Bulgarian State Energy and Water Regulatory Commission.
- The website provides operational data, market information, and administrative services related to the Bulgarian power grid.
- Search results for 'eso scam' primarily return discussions regarding 'The Elder Scrolls Online' (ESO) video game, which is unrelated to this utility provider.
Elektroenergien Sistemen Operator EAD (ESO) is the national electricity transmission system operator of Bulgaria, established in 2007.
We searched scam-report databases, consumer-review sites, and general web sources for eso.bg and didn't find scam reports or complaints. Business registration records confirm the site belongs to the official Bulgarian electricity transmission operator established in 2007.
Threat Detection
Scam Network
Antivirus Engines
Security Scans
Checked against the major public blocklists used by browsers and security tools — no hits.
Reputation Sources
How this domain rates across independent threat-intelligence and blocklist providers.
Technical Details
domain · encryption · redirects · server reputation · referencedThe plumbing behind the site — who registered it, how it’s encrypted, where it’s hosted, and where it links out. A valid certificate or a calm server doesn’t mean the business is honest — scam sites pass these checks too. Use this to corroborate the verdict, not to overturn it.
Contact Verification
We fetched the page and looked for real-world contact details. Legitimate businesses almost always publish an email on their own domain, a phone number, and a postal address. Scam shops usually don't.
- No postal address visible on the page.
- Contact email on the site's own domain (eso@eso.bg).
- Phone number listed (02.07.2026).
- Links to 5 social profiles.
Domain & Encryption
Redirect Chain
- 1301http://eso.bg/
- 2200https://www.eso.bg/
Server Reputation
Referenced Domains
Outbound domains this page links to or loads resources from. Each links to its own security scan.
What to do
Still, stay alert
No major threat indicators — but a clean scan does not guarantee every page is safe, and phishing emails routinely spoof real domains.
- Double-check the exact URL in your address bar
Confirm you are actually on eso.bg and not a lookalike like e-so.bg.com or an IDN homoglyph.
- Use a password manager
Password managers only auto-fill on the exact domain they were saved for — they refuse to fill lookalike domains, which is the single best phishing defence.
- OpenDiscuss this site on the forum
If you have first-hand experience with this site — good or bad — share it with the MalwareTips community.
Final Verdict
This is the official website of Bulgaria's national electricity transmission system operator. The domain shows clean scans, valid SSL, and matches the registered state-owned company established in 2007.
Safety FAQ
Common questions, answered directly from the scan data above — so the answers always reflect the latest verdict on this page.
- Our automated security review found no threat indicators on eso.bg, so it appears legitimate. All 93 antivirus engines we queried report it clean, Even so, always double-check the exact address in your browser, because phishing emails routinely spoof real, trusted domains like this one.
- eso.bg passed our automated checks with a trust score of 94/100. No antivirus engines or major blacklists flagged it at the time of the last scan, and its signals line up with an established, legitimate site. Treat any unexpected login prompt or payment request on it with the same caution you would anywhere.
- Yes — and this is worth understanding. Even trustworthy domains get spoofed in phishing emails (a fake message that only looks like it's from eso.bg), and legitimate sites are occasionally compromised on specific pages. A clean verdict means the site itself checks out today; it does not mean every email or link claiming to be from eso.bg is genuine. Always reach the site by typing the address yourself rather than clicking links in unexpected messages.
- No — all 93 antivirus and blocklist engines in our malware network currently report eso.bg as clean. That's a good sign, though antivirus coverage is only one of the many signals we weigh, and brand-new scam sites can appear clean before vendors catch up.
- No — eso.bg is not currently on the major browser blocklist feeds that Chrome, Safari, Firefox, and Edge rely on. Note that blocklists can lag behind brand-new scam domains, so "not listed" is reassuring but not a guarantee on its own.
- Yes — eso.bg presents a valid TLSv1.3 certificate issued by DigiCert Inc · GeoTrust TLS RSA CA G1, valid for another 46 days. Important caveat: SSL only encrypts the connection between you and the site — it does not verify who runs it. Almost all scam sites now have valid SSL too, so a padlock alone never means "safe".
- eso.bg resolves to an IP operated by Electroenergien Sistemen Operator EAD in BG (Commercial). Hosting location alone doesn't make a site good or bad — but hosting that doesn't match a brand's claimed country, or that sits on networks known for abuse, is one of the many signals we weigh alongside the verdict above.
- This report is a record of the scan run on July 13, 2026, and the verdict reflects that point in time. Scam sites change fast — they can go live, get flagged, or vanish within days — so if you believe something about eso.bg has changed, MalwareTips staff can run a fresh scan that re-checks every signal from scratch and republishes an updated verdict.
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