Heimdal

Heimdal is a Danish cybersecurity company.  It was started in March 2014 in Copenhagen, Denmark, by Morten Kjærsgaard.

 History 
In 2011, a Danish team won a Capture the Flag championship, an event in which participants attempt to find text strings, called "flags", which are secretly hidden in vulnerable programs or websites. The team developed DNS security technology that later became the base for Heimdal.

In 2014, Heimdal was launched in Copenhagen. Its initial name was Heimdal Security. That year, it joined Operation Tovar, an international effort against the Zeus ransomware. The work was noted by the FBI, Europol, and the United States Department of Justice.

Between 2016 and 2018, Heimdal added antivirus, firewall management, and AI-powered DNS detection. Also between 2016 and 2021, Heimdal received recognition at the Cybersecurity Awards (CSA) for its anti-malware and AI-driven security products. 

In 2019, it bought the company BasicBytes.

In 2020, Heimdal was bought by Marlin Equity Partners. The company added email security and perimeter DNS protection.

In 2021 and 2022, the company launched remote desktop tools, a security operations center (SOC), and a Threat-Hunting and Action Center.

In 2023, Heimdal rebranded and moved toward an extended detection and response (XDR) platform.

In 2024, the company launched Privileged Access and Session Management (PASM) and AppFencing. It also introduced Partner NEXUS, a global program for resellers and service providers. That year, Heimdal reached 15,000 customers worldwide. Also in 2024, it was named Cyber Risk Mitigation Vendor of the Year at the Technology Reseller Awards. In 2025, it launched Remote Access Protection (RAP).

 Activities 
Heimdal develops a unified extended detection and response (XDR) platform. Its tools include endpoint detection and response (EDR), network defense, patch and vulnerability management, email protection, privileged access and session management, and ransomware prevention. The company serves many managed service providers (MSPs) and managed security service providers (MSSPs). It exports to markets in the United Kingdom, United States, Canada, the Middle East, Japan, India, and the Asia-Pacific region. Its customers include Jysk, Accenture, VINCI Energies, IT Relation, the University of Cambridge, the University of Oxford, and NHS England.

Heimdal also conducts research and publishes reports on cybersecurity worldwide. The company also contributes to education, and delivers cybersecurity courses.

 References