ransomware

Seoul police arrested 7 suspects accused of using generative AI to launch hacking attacks. The Seoul Metropolitan Police Agency stated that about 90 organizations were involved, collectively stealing 8.2 million records, marking the first large-scale arrest of suspects in AI-assisted hacking attacks in South Korea. The targeted victims included hospitals, universities, private tutoring centers, golf courses, and subsidiaries of large corporate groups, all of which held a significant amount of personal information, including names, contact details, and records of ordinary citizens. One funeral service company lost 1.22 million records, and reports indicated that the tutoring center's data also contained information on minors.According to local media reports, the main suspect, 32 years old, studied arts and sports and has no IT background. He told investigators that he self-taught hacking techniques through YouTube and online blogs, while police pointed out that he had worked in a security company conducting simulated attacks from 2019 to 2022. He initially used website vulnerability scanning tools and later introduced AI coding proxies and an automated penetration testing system called Artex at the end of August. Police stated that he hacked into 60 companies over a span of 44 days from August 31 to October 13.The entire attack operation lasted about 13 months, from September 2025 to this October, and the case was filed in June after a victim reported it. Police indicated that such a large-scale attack previously required a hacker group to accomplish, but AI now allows one person to achieve this in a short time. The suspect sent emails to 38 victims, collectively extorting 360 million Korean won, approximately 272,000 US dollars, but the only confirmed payment was 300,000 won, about 210 dollars. The main suspect was detained and transferred to prosecutors last Friday, facing charges of violating South Korea's Information and Communication Network Act, as well as extortion and attempted extortion. Police will continue to investigate the other 6 accomplices and confirm more victims, with 15 institutions already reporting damages.

According to CCTV News reports, the National Computer Virus Emergency Response Center and the National Engineering Laboratory for Computer Virus Prevention and Control recently discovered multiple incidents of users encountering the "Weaxor" ransomware attack within our country, relying on the National Computer Virus Collaborative Analysis Platform.After the user's important files are encrypted, the file names are changed to the original file name with the ".weax" suffix added. The attackers leave a ransom note on the host, demanding that users contact them and pay the ransom.

A former core infrastructure engineer, Daniel Rhyne, from an industrial company in New Jersey, was sentenced to 32 months in prison for attacking his employer's computer network and demanding a ransom in Bitcoin. The 59-year-old Rhyne, who is from Kansas City, Missouri, was sentenced on September 28 by U.S. District Judge Michael A. Shipp in Trenton. He pleaded guilty in April this year to charges including extortion by threatening to damage a protected computer and intentionally damaging a protected computer. The prosecution did not disclose the name of the company, which is headquartered in Somerset County, New Jersey, serving clients in industries ranging from biopharmaceuticals to oil and gas.According to the FBI's criminal complaint, around 4 PM on November 25, 2023, the company's network administrator began receiving hundreds of password reset notifications for accounts, and subsequently discovered that all other domain administrator accounts had been deleted. Forty-four minutes later, employees received an email titled "Your Network Has Been Penetrated," claiming that the company's IT administrator had been locked out, backups had been deleted, and warning that unless 20 Bitcoins (approximately $750,000 at the time) were paid by December 2, an additional 40 servers would be shut down daily for 10 days. The ransom was set at 700,000 euros, to be paid in Bitcoin.Investigators traced the attack back to an unauthorized virtual machine created on the company network on November 9, 2023, with the password "TheFr0zenCrew!", which was subsequently set for the administrator account, 301 user accounts, and the email used to send the ransom note.

A 28-year-old core member of the globally renowned ransomware group Qilin has been arrested in Japan and was extradited to Germany on October 2. Reports indicate that the man is suspected of illegally infiltrating the systems of a logistics company in Germany in September 2024, encrypting data, and demanding a ransom of approximately $165,000 (about 26 million yen) in Bitcoin.Investigations show that he was responsible for building the attack systems within the Qilin criminal network and took a cut from the ransoms collected by various branch execution teams. Japanese police apprehended him while he was traveling to Osaka in late May this year, and he was subsequently handed over to German authorities after being deemed eligible by the Tokyo High Court. Qilin operates under a "ransomware as a service" (RaaS) model and previously claimed responsibility for a cyber attack on Japan's Asahi Group in 2025.

According to Decrypt, the European Union's law enforcement agency reported that Spanish police arrested a 16-year-old Romanian suspect in Alicante, suspected of being an administrator and main operator of the ransomware group KillSec.Two other suspects in their twenties were arrested in the UK and Romania, respectively; another developer who just turned 18 in August this year has been identified but has not been arrested due to some crimes occurring during their minor years.This operation, codenamed Operation KillSwitch, was led by the Hamburg State Criminal Police and the city's prosecution office, focusing on approximately 1,000 suspected attacks worldwide, with about 500 confirmed as successful intrusions.Law enforcement searched eight locations in Spain, Greece, Romania, and the UK, seized five central servers, and redirected related domain names to seizure announcement pages, while also confiscating at least 110 TB of stolen data.KillSec has been active since around 2024, exploiting software vulnerabilities and poorly secured cloud storage entry points to infiltrate corporate systems, copying internal data and naming victim organizations on dark web leak sites, threatening to publicly release documents to demand cryptocurrency ransoms, and if the target refuses to pay, they release the data for free.The Swiss Federal Police noted that the group also employed double extortion tactics, first encrypting servers and then applying pressure. U.S. prosecutors' charges indicate that a Dutch national residing in the UK, Fouad Eltibrizi (nicknamed Archduke), was indicted by a federal grand jury in Puerto Rico on September 16, subsequently arrested, and awaiting extradition, facing up to 10 years in prison. The European Cybercrime Centre, under the European Union Agency for Law Enforcement Cooperation, is assisting in tracing cryptocurrency funds and conducting digital forensics.

According to a report by Fabien Arnaud from the French media Midi Libre, a resident in Saint-Jean-de-Védas near Montpellier, France, was the victim of a home invasion and extortion related to cryptocurrency. The police acted quickly after the incident and have arrested three suspects.It is reported that the victim had previously encountered a similar violent extortion related to cryptocurrency on April 11 of this year.

Former Los Angeles County Sheriff’s Deputy Eric Saavedra was sentenced to 21 months in prison. The court found that he used law enforcement databases to assist a cryptocurrency trader in carrying out a extortion scheme.In addition to the prison sentence, Saavedra was also ordered to pay $90,984 in restitution, related to his concealment of $373,146 in income from the Internal Revenue Service.

According to ZEIT, the Berlin city government suffered a cyber attack two weeks ago, and the hacker group is suspected of implementing ransomware using the stolen data. According to Der Spiegel, the attackers are believed to be the long-active Rhysida hacker group, demanding a payment of 30 bitcoins (approximately 2 million euros) and threatening to release the data.The sensitive information involved may include records of violations and passwords. The Berlin state government has not yet confirmed the extent of the data breach and has not responded to the ransom amount or the identity of the attackers, stating that it will not comment "for reasons of investigative strategy." Berlin's mayor, Kai Wegner, has made it clear that Berlin will not yield to extortion. The main departments affected are transportation and construction management, which were temporarily isolated from the state government's network after the incident.

Cybersecurity company Check Point Research discovered that the StopAndProtect ransomware campaign uses nearly 2,000 compromised WordPress sites to spread malware, steal data, monitor victims, and deploy ransomware. This campaign was identified in mid-May. As of July 24, it has compromised over 6,000 unique IP addresses, including 1,852 in the United States, and 630 each in Russia and India.The compromised websites were also used to host malware, send commands, and store stolen files, screenshots, and activity logs. Attackers lure Windows users into running PowerShell commands through fake CAPTCHAs, thereby stealing credentials and cryptocurrency wallet recovery phrases, and spreading through networks and USB devices. Researchers have collected over 31,000 screenshots and more than 700 data compression packages, and believe that the attackers may have inadvertently infected themselves.

According to CCTV News, recently, the National Computer Virus Emergency Response Center and the National Engineering Laboratory for Computer Virus Prevention and Control, relying on the National Computer Virus Collaborative Analysis Platform (https://virus.cverc.org.cn), discovered multiple incidents of users being attacked by the "Sorry" ransomware virus within our country. After the user's important files were encrypted, the file names were changed to the original file name + .sorry suffix string. The attackers also left a ransom note on the user's host, demanding that the user download an encrypted communication tool to contact them.

The United States, the European Union, and the United Kingdom jointly announced sanctions against a group involving state-level hacker organizations, cybercrime gangs, and their infrastructure providers. The targets are accused of causing billions of dollars in losses to global businesses, critical infrastructure, and government agencies. Among the most notable is the EU's sanction against the Russian cybercriminal Vitaly Nikolayevich Kovalev (alias "Stern").The EU has identified Stern as one of the core managers of the notorious Trickbot Group ransomware organization, which includes several high-risk ransomware variants such as Conti ransomware and Ryuk. On-chain analysis shows that wallet addresses associated with Stern have received over $300 million in ransom payments, potentially making him the "largest confirmed ransomware operator" to date. According to analysis, the $300 million only represents the profits obtained by Stern personally, and the overall illegal income of the Trickbot group may be much higher.On-chain fund flows indicate that Stern has had transactional connections with multiple ransomware ecosystems, including Ryuk, Conti, Diavol, Karakurt, Royal, and Quantum. Investigations show that Stern plays a role similar to "CEO" within the Trickbot organization, responsible for budget management, personnel recruitment, infrastructure procurement, and attack planning.

According to Financefeeds, the U.S. Department of Justice has announced criminal charges against 19-year-old dual citizen Peter Stokes, who is accused of being a member of the cybercrime organization "Scattered Spider," and has been extradited from Finland to the United States.

According to Decrypt, a former Ukrainian police officer kidnapped a cryptocurrency entrepreneur and extorted approximately $2.2 million through violence, intimidation, and false debt claims. Prosecutors stated that the gang targeted at least four victims and committed crimes using law enforcement methods, official vehicles, and impersonating police officers. The Kyiv regional prosecutor's office announced that the pre-trial investigation has been completed, and the gang includes four former police officers and one previously convicted civilian, but none of them have been formally charged for these attacks yet. This case comes amid a global surge in "ransomware attacks" in the cryptocurrency space, where criminals use violent coercion to steal digital assets.

Bitcoin mining company MARA Holdings allocated approximately $4.3 million for CEO Fred Thiel's personal security expenses in fiscal year 2025, which includes $430,780 for vehicle bulletproof modifications, as well as expenses for bodyguards and residential security facilities. According to documents submitted to the U.S. SEC, MARA also provided approximately $3.9 million in security expenses for CFO Salman Khan, including $438,380 for vehicle bulletproof costs.Reports indicate that as incidents of "ransom attacks" targeting executives and investors in the crypto industry increase, crypto companies are significantly ramping up their investment in executive physical security. The so-called "ransom attack" typically refers to forcing victims to hand over private keys or account access through kidnapping, violence, or coercion. Data shows that in 2025, there were 72 confirmed incidents of crypto-related entity coercion globally, a year-on-year increase of 75%. Among these, France recorded 19 incidents, the highest in the world.

The open-source data visualization tool Grafana stated on platform X that it recently discovered an unauthorized attacker had obtained a token that could access the Grafana Labs GitHub environment and used it to download the code repository.An investigation confirmed that this incident did not involve customer data or personal information leakage, and no impact on customer systems or business operations was found. After the incident, forensic analysis was immediately initiated, and it is believed that the source of the credential leak has been identified. Additional security measures have also been deployed to strengthen environmental protection.Furthermore, Grafana disclosed that the attacker attempted to demand a ransom to prevent the code repository from being made public, but the company ultimately decided to refuse to pay the ransom and will release more information about the incident review after the investigation is completed.

A 27-year-old German hacker, Noah Christopher, was arrested in Bangkok, Thailand, facing up to 74 arrest warrants for cyber crimes in Europe.Investigations show that this individual is suspected of developing and operating a ransomware platform and a "cybercrime-as-a-service" (CaaS) system between 2021 and 2025, including providing distributed denial-of-service (DDoS) attack tools (such as Fluxstress and Neldowner), assisting global clients in launching cyber attacks and charging fees, with related ransom payments involving cryptocurrencies and other digital assets, constituting transnational cybercrime activities. His visa has been revoked, and he is currently detained awaiting extradition to Germany.

Renowned on-chain investigator ZachXBT released a report today stating that a Russian over-the-counter (OTC) broker named Aleksandr (Aleks) Khinkis is suspected of assisting ransomware groups in laundering over $4.7 million since 2025 through a single cryptocurrency trading platform account.The related funds involve three suspicious ransom payments, totaling approximately 796 bitcoins (BTC). The investigation shows that these funds were transferred in batches to his trading platform's deposit address (0xa756) after being bridged between Bitcoin and Avalanche, completing a total of 75 transactions from 2025 to 2026. Additionally, approximately $16.6 million is currently still held in Aave and is being gradually liquidated.ZachXBT pointed out multiple ransom transactions: a ransom payment of about 72 BTC in September 2025 was bridged to the related address; a ransom of about 164 BTC was also discovered in October 2025 and converted to approximately $3.8 million. Some related addresses were blacklisted by Tether in November 2025, and the subsequently frozen USDT was destroyed three weeks ago, indicating that law enforcement and compliance agencies have intervened.Earlier in 2023, this account was also involved in a ransom transaction of about 560 BTC, which was circulated through multiple intermediary addresses and trading platforms before being bridged back to the Avalanche network in 2024. Furthermore, the investigation pointed out that the source addresses of the related bitcoins have a high correlation with multiple ransomware addresses, suspected of serving as payment transit nodes. Although some funds remain dormant, ZachXBT warned that they may still be laundered in the future and urged victims to report related addresses promptly to freeze the funds.

According to Criptonoticias, the city government of Sanxenxo in the Galicia region of Spain suffered a ransomware attack, with hackers encrypting thousands of administrative documents and blocking system access, demanding a ransom of $5,000 in Bitcoin.The attack occurred on January 26, causing the municipal servers to completely crash, affecting the operation of essential services in the city, which has over 17,000 residents. The city government has reported the incident to the Spanish Civil Guard, refused to pay the ransom, and stated that it is enabling daily backups to restore the system.

According to a report by Le Parisien, the French cryptocurrency tax reporting platform Waltio announced that it has been extorted by a hacker group called "Shiny Hunters." The group claims to have obtained personal data of approximately 50,000 customers of the platform, most of whom are located in France, and is demanding a ransom for it.Waltio is a company that provides portfolio tracking and tax calculation services for cryptocurrency holders. The company stated that it has reported the incident of "attempted extortion and disruption of automated data processing systems" to the police. The report noted that the hackers allegedly obtained the relevant customers' email and account balance information as early as 2024.

According to Cointelegraph, researchers from the cybersecurity company Group-IB have discovered a ransomware called "DeadLock" that is using Polygon smart contracts to hide itself and rotate proxy addresses.This ransomware was first identified in July last year, and it dynamically updates the command and control infrastructure addresses used to communicate with victims by invoking specific smart contracts. Once a victim is infected and data is encrypted, DeadLock issues a ransom note threatening to sell the stolen data if demands are not met.Researchers pointed out that storing proxy addresses on-chain makes its infrastructure extremely difficult to dismantle, as there is no central server that can be shut down, and blockchain data is permanently retained across global nodes. This method of abusing smart contracts to relay proxy addresses is highly variable. Although DeadLock currently has low exposure and a limited number of known victims, its novel attack techniques still pose a potential threat to organizations that do not take it seriously.