London, UK, 30 July 2026 – New data from Heimdal’s telemetry measures the gap between execution of the MediaArena adware and the completion of quarantine. The same pattern has been confirmed across more than 40 client environments. MediaArena is a browser-modifier adware family that Microsoft has tracked since 2023. It is low-severity, and that is […]

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Heimdal did not start as a traditional cybersecurity company. It started with two Danish cybersecurity researchers, a piece of innovative technology and a challenge. Could they create something that could identify vulnerabilities, intercept malicious activity and help protect machines before threats could take hold? That technology went on to compete at the Defcon CTF world […]

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If Microsoft Defender quarantines BrowserModifier:Win32/MediaArena on one of your endpoints, the alert reads like a win. Our SOC data says treat it as a live persistence incident instead. In the case we timed, the payload finished writing its persistence 21 seconds into execution. Quarantine didn’t complete until 29 seconds. By the time the alert fired, […]

The post MediaArena malvertising: why a quarantine isn’t the end of the incident appeared first on Heimdal Security Blog.

“Make everyone one percent better and it compounds across the team.” That’s the line Joe Head wrote about his own job and when I read it back to him, he didn’t hesitate. “That is 100% the objective,” he said. Joe runs AI adoption for an 80-person team as the only AI automation specialist in the […]

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There are several cybersecurity companies that offer managed EDR services in 2026. Here’s what actually separates them, and who each one suits. Most successful cyber attacks begin with a breached laptop, a smartphone or a server. Over the past 15 years, endpoint detection and response (EDR) has gone from niche to a mainstream security solution. […]

The post The 4 best managed EDR service suppliers (and how to choose) appeared first on Heimdal Security Blog.

Without the right tools, no security operations centre (SOC) can do its job properly. A SOC platform brings together a range of security technologies that let your analysts rapidly identify threats, investigate them and implement fixes. There are many cybersecurity tools that an SOC can use, and there are many vendors selling comparable products. The […]

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