Low Trust Online Casino
This site is classified as Low Trust Online Casino based on multiple risk signals, including 10 blacklist detections. These risks are driven by active warning signals despite the site's longer domain history.
Figure 1. Trust signal radar for polyfill.io. Larger shaded area indicates stronger trust signals.
How we scored polyfill.io
On-page mentions:
18+, Sports, Casino, Cash Back, Sensitive Content
Tech signals:
Cloudflare Browser Insights
Positive signals:
popular site
a long-term domain history (13.6 years)
an active SSL certificate (3 months)
Negative signals:
security-provider warnings
multiple malware or phishing blacklist detections (10)
Context signals:
content related to online casinos; sports
Last checked October 5, 2026 at 4:09 PM by
Gridinsoft Trust Model v2.5.6
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Polyfill.io is rated as a low-trust casino. This usually indicates limited operating history, weak reputation evidence, or licensing claims that cannot be independently confirmed.
Main user risk is financial: contested withdrawals, bonus terms interpreted against the player, delayed responses, and poor escalation channels. When deposits are made in crypto, recovery options are typically very limited.
This is a risk assessment, not a legal determination. If you proceed, verify license status in the regulator register and limit deposits to an amount you can afford to lose.
What is Polyfill?
Polyfill.io is rated as a low-trust casino. This usually indicates limited operating history, weak reputation evidence, or licensing claims that cannot be independently confirmed.
Main user risk is financial: contested withdrawals, bonus terms interpreted against the player, delayed responses, and poor escalation channels. When deposits are made in crypto, recovery options are typically very limited.
This is a risk assessment, not a legal determination. If you proceed, verify license status in the regulator register and limit deposits to an amount you can afford to lose.
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Gridinsoft blocks this website because it was classified as low trust online casino.
Use caution with polyfill.io. Its current Gridinsoft trust score is 35/100; review the site-specific findings below before use.
What are the risks of polyfill.io?
This website shows characteristics associated with low-trust online casinos, including limited reputation evidence and unverified licensing details.
Why is polyfill.io marked "Low Trust Online Casino"?
Gridinsoft evaluates polyfill.io, focusing on suspicious content indicators (Blacklisted by Security Providers, Blacklisted), hosting technology and infrastructure, SSL certificate status, website reputation across multiple databases, customer reviews from various independent platforms (1 reviews). We weigh these indicators to calculate the trust score.
Note: Automated systems are not perfect — while the evidence suggests risk, there is still a chance the site is legitimate. We recommend you check the website using detailed analysis or by contacting the company directly through verified channels.
A structured view of the site's detected themes, page signals, and related online footprint elements.
18+
Sports
Registration Form
Automated page analysis detected form or data-entry functionality on polyfill.io. Forms can involve user-submitted information, so verify ownership and privacy terms before entering data.
Casino
Cash Back
Sensitive Content
Cloudflare Browser Insights
This website is proxied through Cloudflare's CDN/network and has Cloudflare Browser Insights enabled.
Blacklisted by Security Providers
Security intelligence signal: A security-provider signal contributes to the automated assessment of polyfill.io. Publicly displayable provider verdicts, when available, are reported separately; some source details may be restricted by license.
Popular Site
This site shows elevated traffic signals relative to similar domains; this is generally positive but does not by itself prove legitimacy.
Long Term Domain
This site is registered for an extended period, which is generally a positive continuity signal.
Established Domain
polyfill.io has maintained active domain presence over time, indicating operational continuity.
Listed by Gridinsoft
Gridinsoft Internet Security classified this site as unsafe. As a VirusTotal partner, our detections contribute to broader protection across tools and browsers.
If you own Polyfill.io and want to challenge the trust score, please submit a review request via portal.gridinsoft.com. There you can claim your profile and add verified company/contact details. If you cannot access the portal, email legal(at)gridinsoft.com with proof of legitimacy and contact details. We never charge website owners for reviews or reconsideration requests. For more information, please review our Disclaimer.
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Help protect others by sharing this page on social media! The more people who know about polyfill.io, the fewer chances they have to deceive someone else.Help others evaluate polyfill.io by sharing this page on social media!
Help protect others by sharing this page on social media! The more people who know about polyfill.io, the fewer chances they have to deceive someone else. Help others evaluate polyfill.io by sharing this page on social media!