What is ESTsecurity?
ESTsecurity is a major South Korean cybersecurity company providing the ALYac antivirus platform, one of the most widely deployed security products in South Korea, used by consumers, enterprises, and government agencies. Their antivirus engine contributes to VirusTotal and their threat intelligence feeds into Korean ISP filtering systems. For businesses with South Korean users, an ESTsecurity flag can block access for a significant portion of the Korean internet.
Why ESTsecurity flags legitimate domains
- ESTsecurity's ALYac engine detected malware signatures linked to your domain
- Your domain appeared in Korean cybersecurity threat advisories or KISA reports
- A URL on your site was flagged in a phishing campaign targeting Korean users or brands
- Your shared hosting infrastructure was associated with Korean-targeted phishing campaigns
- Automated analysis by ALYac's heuristic engine flagged suspicious content on your pages
What a listing means for your business
ESTsecurity's market position in South Korea means their flag affects access for millions of Korean users directly through ALYac products and indirectly through ISP filtering. Their VirusTotal contribution also increases the global visibility of the detection.
How BrandsDefender gets you delisted
We verify that your domain is clean, prepare the evidence ESTsecurity needs, file the false positive dispute through the right channel and follow up until the flag is removed. No cure, no pay.
Frequently asked questions
Does ESTsecurity appear on VirusTotal?
Yes, ESTsecurity's ALYac engine is integrated with VirusTotal. Their detection adds to your detection count on VirusTotal, which is visible globally and used as a reputation signal by many other security products.
Is ESTsecurity relevant for global businesses?
For any business targeting Korean users or operating in South Korea, ESTsecurity is extremely relevant. Additionally, the VirusTotal contribution makes their flags visible globally and can influence other vendors' classifications.