A Russian state-sponsored threat group has been stealing sensitive data from governments and commercial organizations since July 2025 via a novel exploit in popular Linux-based enterprise software, U.S. authorities and cyber officials from more than a dozen other countries warned in a joint cybersecurity advisory Thursday.

Laundry Bear’s most recent espionage campaign involves the exploitation of a zero-day vulnerability in Zimbra Collaboration Suite that wasn’t patched until November 2025, five months after attacks were well underway, officials said. 

The exploit just requires a view — no clicks — and allows attackers to steal the previous 90 days’ worth of email, the account’s password, search history, the victim organization’s email directory, two-factor authentication tokens and other newly created passwords.

“The covert and persistent nature of this activity, along with the absence of any known financial extortion, almost certainly indicates this group’s involvement in espionage activities with Russian government backing,” officials wrote in the advisory. 

“Additionally, extensive Ukrainian targeting, prior to use against U.S. and other NATO allies, outlines an increasing trend within Russian cyber threat groups to target Ukrainian users first—both as a priority target and as a testbench for malicious cyber techniques before broader global deployment.”

The state-sponsored espionage group, also known as Void Blizzard, has compromised governments and organizations in the defense, education, energy, law enforcement, media, finance, transportation and technology sectors. 

Laundry Bear’s year-long campaign involving the exploitation of CVE-2025-66376 showcases more technical capabilities, including a custom JavaScript payload it delivers to targeted victims via phishing emails. The threat group could also likely adapt the novel data exfiltration and aggregation capability, dubbed “beehive,” to exploit other vulnerabilities, officials warned.

The defect’s medium-severity rating of 6.1 underscores the challenge defenders regularly confront in prioritizing patching schedules based on measure of severity alone.

The Russian state-supported group, which has been active since at least 2024, is still actively exploiting Zimbra Collaboration Suite instances that remain unpatched, officials said.

Authorities shared Thursday indicators of compromise, mitigation steps and urged organizations to update their vulnerable software.

“This campaign’s targeted victimology and limited exploitation capabilities likely indicate this group manually identifies and targets the victim organizations” by identifying organizations with public-facing infrastructure, officials wrote in the advisory.

Once a target is identified, Laundry Bear also likely compiles email addresses for users to target with the exploit via phishing emails. Officials did not identify specific victims or describe the volume of organizations already compromised.

The joint cybersecurity advisory was issued by the United States, Australia, Canada, New Zealand, the United Kingdom, Czech Republic, Denmark, Estonia, Finland, France, Italy, Moldova, the Netherlands, Poland, Spain and Sweden.

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State and local officials and election security experts largely panned a Thursday night primetime speech by President Donald Trump, saying it was reflective of White House “desperation” to find any credible evidence to support their claims that U.S. elections have been rigged against the two-term president.

While the White House teased explosive new claims about the potential compromise of U.S. elections by China, Trump’s speech was a rehash of claims that both have no supporting evidence and have been repeatedly debunked when investigated. 

David Becker, executive director of the Center for Election Innovation and Research and a former voting and civil rights attorney at the Department of Justice, said none of Trump’s claims or allegations were new or substantively different from previous theories he’s been espousing over the past six years.

“The White House promised a bombshell and they delivered a dud,” Becker said on a call with reporters Friday. “There was nothing that even calls into question past elections — certainly not the 2020 election.”

The administration declassified a huge tranche of documents from the intelligence agencies, and news outlets continue to sift through them, but thus far nothing has been found that remotely validates the administration’s claims about foreign interference from China costing Trump the 2020 election.

In fact, some of the most relevant documents found at this point have supported the opposite conclusion, with agencies assessing that while China engaged in influence campaigns around the election, it was not attempting to outright interfere with U.S. election infrastructure, hack voting machines or manipulate ballots.

John Solomon, a former journalist and opinion writer at The Hill brought in by the White House to lead the investigation, also told reporters Thursday that his search hasn’t turned up evidence that the 2020, 2022 or 2024 elections were affected by fraud.

The one new major claim by Trump — that the Department of Homeland Security determined hundreds of thousands of noncitizens were registered to vote across four states — is almost certainly false or overinflated, given that it contradicts post-election state audits that have routinely found single or double-digit numbers of noncitizens registered to vote within a single state across multiple elections.

Over the past six years, similar claims by GOP secretaries of state and political activists purporting to find mass numbers of noncitizens registered to vote have turned out to be grossly inflated due to shoddy data analysis, and the vast majority of cases involving “suspected noncitizens” turn out to be U.S. citizens who are legally registered to vote.

The White House has provided little to no information on the methodology used to flag and identify supposed noncitizen voters, other than alluding to the use of “commercial data” and federal databases. A federal court recently ordered DHS to dismantle the SAVE database, its primary database for verifying the citizenship status of U.S. voters, because it was unreliable and violated longstanding privacy laws. 

 Apart from DHS admitting its own data on citizenship is incomplete, Becker said using a list that relies on matching voter files with commercial data is not a reliable way of determining citizenship.

“It is impossible to take a public voter file with very little information that is uniquely identified, like a driver’s license number, and compare it to a commercial database and say for sure the Maria Rodriguez or the John Lee or the Shawn O’Hara you have on that is the same person,” he said.

Election officials also responded forcefully. Nevada Democratic Secretary of State Francisco Aguilar said that Trump has spent a decade attempting to manufacture a crisis around voter fraud and the president’s speech Thursday night was an extension of that effort. 

“As Nevada’s chief elections officer, it’s my job to call balls and strikes — so when the President lies, I am obligated to call him out,” Aguilar said in a statement. “The facts have not changed: Nevada’s elections are among the safest, most secure and accessible in the nation.”

It’s not just Democrats that have objected to the administration’s efforts. GOP states have gone to court to block the Department of Justice from obtaining their voter data, and Idaho’s Republican secretary of state responded to a DOJ letter threatening prosecution of election officials as “not well met” and potentially illegal under state ethics laws. 

Trump’s speech potentially casts additional light on recent White House decisions, such as firing all three commissioners on the Election Assistance Commission. The agency helps certify voting machines for security, and all three commissioners have served across administrations and maintain close relationships with state and local election officials.  

Pamela Smith, CEO of the nonprofit Verified Voting, said that while the EAC can’t take certain actions that need commissioner approval, “critical functions like voting system testing and certification can continue under the existing framework and should not be affected.”

In 2020, Trump’s initial claims of widespread election fraud were undercut by leaders at the Cybersecurity and Infrastructure Security Agency, which said there was no evidence the election was compromised. The removal of EAC commissioners could represent an attempt to preempt any efforts to rebut or criticize White House claims that elections and voting machines have been compromised.

Some have worried that Trump could use the speech as a pretext to declare a national emergency or cancel elections.

Tom Lopach, CEO of the Voter Participation Center, said “you don’t dismantle election security infrastructure if you’re serious about protecting elections.”

“You dismantle it if you’re planning to claim, without evidence, that the system failed you,” he said. 

While Becker takes Trump’s broadsides against state election authority seriously, he also said it’s important not to lose sight of the fact that, in his view, the administration is losing the argument across the board.

More than a dozen federal courts have unanimously rejected the federal government’s attempts to forcibly obtain state voter data, while other courts have rejected core pieces of his election-related executive orders. State officials have publicly — and at times, angrily — pushed back on the administration’s demands as blatant federal overreach. 

Becker predicted that such an act would be quickly shot down by courts as well, noting that the U.S. has never canceled or postponed an election in its 250-year history, including when British troops were marauding on American soil during the War of 1812 or even at the height of the Civil War.

It’s important not to conflate the White House’s bluster and intentions with its actual authorities or capability to seize control of U.S. elections.

“This is what panic and desperation look like,” Becker said. “They’ve had 18 months in total control of the federal government and they have found nothing that would support President Trump’s lies about the 2020 election, and so they’re just trying to grab as much garbage as they can and throw it up against the wall, and it’s not sticking.”

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Russian state-sponsored hackers are breaking into critical infrastructure around the world by exploiting poorly configured and vulnerable networking devices, authorities from the United States and 12 additional countries said in a joint cybersecurity advisory Monday.

Officials once again urged defenders to take more preventative measures to thwart attacks from the Russian Federal Security Service Center 16, which has been actively targeting critical infrastructure for more than a decade. The hackers are also tracked as Berserk Bear, Energetic Bear, Crouching Yeti, Dragonfly, Ghost Blizzard and Static Tundra.

“This is an ongoing issue that has impacted various U.S. and foreign networks across multiple sectors, including the defense industrial base, communications, energy, financial services, government facilities and health care sectors,” the National Security Agency said in a statement.

The state-sponsored attackers scan the internet for vulnerable routers using default or weak passwords, and have also exploited vulnerabilities in Cisco devices, Cisco’s Smart Install feature and web portals to take over network devices. 

Two of the Cisco vulnerabilities exploited by the Russian FSB Center 16 hackers are quite old, including CVE-2008-4128 and CVE-2018-0171. 

Officials shared technical details of the threat group’s activities and advised network defenders to disable Cisco Smart Install on all devices, use stronger modes of authentication and passwords, monitor for unusual credentials and logins using local accounts. 

The joint advisory comes nearly a year after the FBI issued a similar alert about the same group targeting end-of-life networking devices running Cisco Smart Install. 

On Monday, the European Union blamed Russia’s FSB Center 16 for a December 2025 attack on Poland’s energy grid. The United Kingdom, also on Monday, sanctioned 24 individuals and entities allegedly involved in various attacks attributed to Russian intelligence services.

“From directing criminals to targeting businesses, and striking Poland’s energy grid in the depths of winter, the Russian state is sinking to new lows in its attempts to undermine European security,” Yvette Cooper, foreign security of the United Kingdom, said in a statement. 

Other countries behind the joint cybersecurity advisory include: Canada, Australia, New Zealand, Czech Republic, Denmark, Estonia, Finland, France, Italy, Poland and Sweden.

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Authorities on Thursday disrupted a botnet, a malware framework and seized infrastructure that Evil Corp and other cybercrime groups used to steal data and break into various networks.

The globally coordinated effort targeted SocGholish, multi-stage malware that has compromised websites, redirected users to traffic distribution systems (TDS) and slipped malware into their networks since 2017.

“The malware establishes an initial foothold into victim computers, collectively known as a botnet, and is then used by threat actors for further targeting with ransomware campaigns and espionage,” the FBI’s cyber division said in a statement. 

Cybersecurity firms, researchers and officials from the United States, Canada, Germany, the Netherlands and Europol took down 106 servers and remediated nearly 15,000 sites that were infected with the malware. Officials also disabled the botnet and notified victims.

Sites infected with SocGholish, which are primarily hosted on WordPress, were widespread and provided everyday services including restaurants and auto repair shops, according to the Dutch National Police. 

The botnet, also known as “FakeUpdates,” is linked to the Russian cybercrime group Evil Corp. It also provided initial access to other ransomware variants, including DoppelPaymer, WastedLoocker, Hades Ransomware, LockBit, RansomHub and others, according to Infoblox, which participated in the takedown. 

Proofpoint, which also participated in the disruption, described Evil Corp as one of the most prominent cybercrime groups in operation and the “grandfather” of a threat type that compromises websites and uses TDS to redirect users to malware.

Following the takedown, the FBI issued a public service announcement warning about cybercriminals using TDS to break into victim networks for ransomware or other financial scams. 

Cybercriminals redirect traffic from sites to bypass firewalls, obscure their activity, identify potential victims and send them to phishing pages to steal credentials, initiate financial scams, access networks, deliver other malware, and sell access to other cybercriminals, officials said.

The law enforcement action was part of Operation Endgame, a multinational effort targeting cybercrime since 2024, and more narrowly for the FBI part of Operation Riptide, an ongoing campaign targeting cybercriminals and the infrastructure and financial networks they use to commit fraud.

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Authorities arrested and unsealed charges against a Canadian man accused of running Kimwolf, one of the most far-reaching DDoS botnets on record, the Justice Department said Thursday.

Jacob Butler was arrested Wednesday in Ottawa, Canada, and awaits extradition to the United States where he is charged with aiding and abetting computer intrusions and, if convicted, faces up to 10 years in prison.

Investigators said the 23-year-old, also known as “Dort,” was a principal administrator of Kimwolf, a variant of the record-setting Aisuru DDoS botnet that spread like wildfire and eventually took over more than 2 million Android TV devices after its operators figured out how to abuse residential-proxy networks for local control.

Authorities in March seized infrastructure powering the Kimwolf, Aisuru, JackSkid and Mossad botnets, which hijacked a combined three million devices and launched more than 300,000 DDoS attacks collectively.

Kimwolf, which operated as a DDoS-for-hire service for other cybercriminals, initiated more than 25,000 attacks, resulting in network outages, disruptions and financial losses exceeding millions of dollars, officials said. Officials also said they found evidence linking Kimwolf to DDoS attacks targeting Department of Defense Information Network IP addresses.

“Kimwolf and the botnets associated with this operation have supported persistent corporate intrusion efforts and been used by a wide range of serious threat actors,” Zach Edwards, staff threat researcher at Infoblox, told CyberScoop.

Authorities searched Butler’s residence during the globally coordinated operation, but did not arrest him until Wednesday, roughly two months later. Officials filed a criminal complaint against Butler in the U.S. District Court for the District of Alaska in April, and unsealed the complaint following his arrest.

A special agent with the Defense Criminal Investigative Service confirmed Butler’s identity and involvement in the Kimwolf botnet after Butler used the same IP address to access multiple email accounts he controlled and Discord accounts linked to Kimwolf. 

“I have observed significant operational security lapses on Butler’s part resulting in patterns of overlapping IP usage among a Google account in Butler’s true name, other Google accounts that I believe to be controlled by Butler due to use of the same machine cookies, and Discord accounts which have been used in support of the KimWolf operation,” the special agent said in an affidavit. 

“The Discord accounts show patterns of overlapping IP usage with the KimWolf backend server. These IP addresses appear to be proxy or VPN IPs which were likely used by Butler in an unsuccessful attempt to evade law enforcement scrutiny. However, like many cybercriminals, Butler did not use proxy or VPN IP addresses exclusively,” the special agent added. 

Authorities described the botnet takedowns in March in nearly conclusive terms at the time, yet court records indicate the Kimwolf botnet is back in operation. 

“While today’s announcement is encouraging to see, there are still hundreds of millions of insecure IoT and network devices connected to sensitive government, corporate and home networks, and these remain a priority target for threat actors looking to build the next version of Kimwolf,” Edwards said.

“Until we find solutions to this underlying problem,” he added, “we’ll unfortunately continue to play Whac-A-Mole with botnet operators year after year.”

You can read the affidavit supporting the criminal complaint against Butler below.

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