The open source software easyjson is used by the US government and American companies. But its ties to Russia’s VK, whose CEO has been sanctioned, have researchers sounding the alarm.
Security researchers warn that a popular open source tool maintained by Russian developers could pose significant risks to US national security.
Key Points:
The open source tool easyjson is linked to VK Group, a company run by a sanctioned Russian executive.
easyjson is widely used in the US across various critical sectors including defense, finance, and healthcare.
Concerns are heightened due to the potential for data theft and cyberattacks stemming from this software.
*Recent findings from cybersecurity researchers at Hunted Labs indicate that easyjson, a code serialization tool for the Go programming language, is at the center of a national security alert. This tool, which has been integrated into multiple sectors such as the US Department of Defense, is maintained by a group of Russian developers linked to VK Group, led by Vladimir Kiriyenko. While the complete codebase appears secure, the geopolitical context surrounding its management raises substantial concerns about the potential risks involved.
The significance of easyjson cannot be overstated, as it serves as a foundational element within the cloud-native ecosystem, critical for operations across various platforms. With connections to a sanctioned CEO and the broader backdrop of Russian state-backed cyberattacks, the fear is that easyjson could be manipulated to conduct espionage or potentially compromise critical infrastructures. Such capabilities underscore the pressing need for independent evaluations and potential reevaluations of software supply chains, particularly when foreign entities are involved.
Recent Western government revelations about EvilCorp flesh out how Russian ransomware actors and the Russian government use each other to navigate a world they perceive as dangerous.
Note added April 30 2025:
Originally posted October 16, 2024 in a very different global geopolitical context, this analysis remains relevant today. Subsequent revelations, especially a set of leaked messages from the Black Basta group – a successor to the Conti group – reaffirm the complexity of relations between Russian ransomware actors and security officials. (The Natto Team discussed the value of leaks here). The Black Basta leaks show that group's members as:
Receiving Protection: Black Basta chief “Tramp” – who chose as his moniker the Russian version of the current US president’s name – boasted of receiving high-level help from Russian authorities after Armenian officials arrested him in June 2024.
But Still Vulnerable: Tramp speculated in July 2024 that someone from their circle had snitched on him, “tempted” by the rewards the US State Department has offered for information on Tramp. He also received tipoffs from criminal acquaintances and from “my law enforcement people,” telling him that Russian officials faced international pressure to crack down on Russian cybercriminals: “those who get paid by Interpol here will start making our lives hell.” In September 2024, Black Basta coder “YY” told Tramp that Russian officials had raided YY's home, impounded his car, and “marinated” him in custody for a time.
Under Pressure to Work for the Russian State: In a November 14 2022 chat, “Tramp” said, “I have guys in Lubyanka [FSB headquarters] and the GRU [military intelligence agency] – I have been “feeding” them for a long time. They only want to take people on to work for them. They won’t even talk about [prison] sentences or anything. You can go in to work every day at 8 am and leave at 6 pm, just like in a ‘white’ [legitimate] job.”
Tracking Geopolitics: In May 2024, after Black Basta paralyzed IT systems at US-based Ascension Healthcare, Black Basta ransom negotiator “Tinker” pondered the group's extortion strategy in light of US election-year politics. He mused that, if anyone died as a result of the group’s attack on a healthcare entity – particularly a Christian hospital system like Ascension – US citizens would demand that their government do whatever it took to induce Russia to crack down on the criminals. Tinker speculated that the Joe Biden administration might make serious concessions to Russia, such as reducing military aid to Ukraine, in return for Russia’s cracking down on the criminals. For the Natto Team’s own assessment of Russian-US “ransomware diplomacy,” see here and here.
It will be interesting to observe how Russian cybercriminals interpret recent developments in US-Russian relations.
Since early March 2025, Volexity has observed multiple suspected Russian threat actors conducting highly targeted social engineering operations aimed at gaining access to the Microsoft 365 (M365) accounts of targeted individuals. This activity comes on the heels of attacks Volexity reported on back in February 2025, where Russian threat actors were discovered targeting users and organizations through Device Code Authentication phishing...
We dive into one of the most sophisticated and impactful ecosystems within the global cybercrime landscape. Our research looks at tools and techniques, specialized forums, popular services, plus a deeply ingrained culture of secrecy and collaboration.
The Russian hacking group known as Gamaredon, or “Shuckworm,” has been making headlines with its sophisticated cyberattacks targeting Western military missions. This group has evolved its tactics, techniques, and procedures (TTPs) to enhance stealth and effectiveness, transitioning from Visual Basic Script (VBS) to PowerShell-based tools. PowerShell is a task automation framework from Microsoft, often used by attackers to execute commands and scripts on Windows systems. This shift, as reported by Symantec, highlights their strategic move to obfuscate, or hide, payloads and leverage legitimate services for evasion. Gamaredon’s recent campaigns have notably involved the use of malicious removable drives, targeting Western military missions in Ukraine with .LNK files that initiate infections upon execution. These developments underscore the group’s persistent threat to geopolitical entities, particularly those related to the Ukrainian military.
German intelligence services have said they are investigating a suspected Russian cyberattack against a Berlin-based research network.
Two other employees at the St. Petersburg-based hosting provider Azea Group were arrested. The company has alleged links to state-sponsored disinformation campaigns and cybercriminal infrastructure.
This report presents:
The secretary of Defense has ordered U.S. Cyber Command to stand down from all planning against Russia, including offensive digital actions, sources tell Recorded Future News.
Recent incidents indicate US is no longer characterizing Russia as a cybersecurity threat, marking a radical departure: ‘Putin is on the inside now’
Google Threat Intelligence Group (GTIG) has observed increasing efforts from several Russia state-aligned threat actors to compromise Signal Messenger accounts used by individuals of interest to Russia's intelligence services. While this emerging operational interest has likely been sparked by wartime demands to gain access to sensitive government and military communications in the context of Russia's re-invasion of Ukraine, we anticipate the tactics and methods used to target Signal will grow in prevalence in the near-term and proliferate to additional threat actors and regions outside the Ukrainian theater of war.
Germany’s security services warned on Friday that fake videos circulating online purporting to reveal ballot manipulation in the country’s upcoming federal elections were part of a Russian information operation.
Microsoft Threat Intelligence Center discovered an active and successful device code phishing campaign by a threat actor we track as Storm-2372. Our ongoing investigation indicates that this campaign has been active since August 2024 with the actor creating lures that resemble messaging app experiences including WhatsApp, Signal, and Microsoft Teams. Storm-2372’s targets during this time have included government, non-governmental organizations (NGOs), information technology (IT) services and technology, defense, telecommunications, health, higher education, and energy/oil and gas in Europe, North America, Africa, and the Middle East. Microsoft assesses with medium confidence that Storm-2372 aligns with Russian interests, victimology, and tradecraft.
Starting in mid-January 2025, Volexity identified several social-engineering and spear-phishing campaigns by Russian threat actors aimed at compromising Microsoft 365 (M365) accounts. These attack campaigns were highly targeted and carried out in a variety of ways. The majority of these attacks originated via spear-phishing emails with different themes. In one case, the eventual breach began with highly tailored outreach via Signal.Through its investigations, Volexity discovered that Russian threat actors were impersonating a variety of individuals
A key Russian cybercrime syndicate responsible for aiding merciless ransomware attacks around the world has been targeted by new UK sanctions.
How Russian propaganda challenges Switzerland's neutrality, using disinformation to sway public opinion in the Ukraine war.
The Silver Dania is the third ship detained in recent weeks over concerns of intentional damage to subsea infrastructure in the Baltic Sea.
Another undersea data cable, this time connecting Sweden and Latvia, has been severed in the Baltic Sea, officials from both countries said Sunday. The incident prompted Sweden to launch a criminal probe into the matter and seize a "suspect vessel" vessel headed for Russia.
Russian threat actors combine domain name vulnerabilities with hidden router proxy techniques to scale their attacks while remaining shielded from detection.