ALYac

ALYac is ESTsecurity's antivirus program for Windows PCs in South Korea. It protects against malware and ransomware with real-time monitoring and dual-engine detection. Supported platforms are Windows. Among the capabilities recorded for it are malware detection and ransomware protection. It is aimed at Consumer buyers. ALYac is free to use.

Current Version

3.0.2.1182

Product Page

estsecurity.com/…/product

Market

Consumer

Licence

Free

Price

Free

Record Created

2026-08-20

Last Updated

2026-10-25

ESTsecurity makes ALYac, which is among the most widely installed consumer antivirus products in South Korea — the company describes it as the country's national vaccine, using the Korean idiom for antivirus software. It is based in Seocho-gu, Seoul, and is the security subsidiary of ESTsoft, which spun the security business out into its own company. The line carries the ALYac name throughout: ALYac for households, with ALYac Mac, ALYac Linux/Unix and ALYac Office editions, ALYac Enterprise for managed deployments and ALYac EDR for detection and response. ThreatInside is its threat-intelligence service, and its Security Response Center publishes research on campaigns aimed at Korean targets — including the state-sponsored groups that focus on the peninsula, which is a body of analysis few vendors outside Korea produce. Its market is almost entirely domestic. Expect fewer entries in the European public test cycles than for a globally sold product of comparable installed base. Vendor page →

Website

estsecurity.com

Country

🇰🇷South Korea

Headquarters

🇰🇷Seoul, South Korea

Year Established

2017

Customers

13K organisations

Users

16M users

Revenue

≈ $17.7M (2023)