**Russian Cyber Spies Target Embassies in Moscow**
A sophisticated Russian state-sponsored cyberespionage group, known as “Secret Blizzard,” has been confirmed to be targeting foreign embassies in Moscow. According to Microsoft Threat Intelligence, this group is employing a technique called “adversary-in-the-middle” to deploy its custom malware, “ApolloShadow.”
This campaign has been ongoing since at least 2024 and poses a high risk for diplomatic entities and other sensitive organizations operating within the Russian capital. The group’s ability to operate at the Internet Service Provider (ISP) level means that diplomatic personnel using local Russian ISPs or telecommunications services are highly likely targets.
**Sophisticated Malware and Intelligence Collection**
The ApolloShadow malware allows Secret Blizzard to install a trusted root certificate on targeted devices. This certificate can trick devices into trusting malicious, actor-controlled websites, enabling the cyberespionage group to maintain persistent access to diplomatic devices, presumably for intelligence gathering. In February 2025, Microsoft observed this technique specifically against foreign embassies in Moscow.
**Russia’s Domestic Intercept Systems and Cyber Espionage**
Microsoft suggests that Russia’s domestic intercept systems, such as the System for Operative Investigative Activities, may be aiding Secret Blizzard’s operations. The large scale of these operations indicates a coordinated effort between the cyberespionage group and Russian authorities. This collaboration raises concerns about the ability of foreign embassies to maintain their confidentiality.
**Defense Measures and Global Implications**
Although the cyberespionage primarily targets entities within Russia, Microsoft recommends defense measures that are broadly applicable to mitigate similar cyber threats worldwide. These measures include routing all traffic through encrypted tunnels or utilizing alternative, satellite-based internet providers not controlled by Russian infrastructure. By taking these precautions, organizations can reduce their risk of being targeted by sophisticated cyberespionage groups like Secret Blizzard.
**Conclusion**
The targeting of foreign embassies in Moscow by Secret Blizzard highlights the need for vigilance and proactive defense measures against cyber threats. As the global cybersecurity landscape continues to evolve, it is essential for organizations and governments to work together to protect sensitive information and prevent malicious activities.
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