U.S. Congressional Budget Office
November 6, 2025
•[ data leak ]
The U.S. Congressional Budget Office confirmed a cybersecurity incident after a suspected foreign hacker breached its network, potentially exposing sensitive internal information. A CBO spokesperson told BleepingComputer that the agency identified the intrusion, immediately contained it, and deployed additional monitoring and new security controls while the investigation continues. Reporting based on U.S. officials indicates that emails and exchanges between congressional offices and CBO analysts may have been accessed, raising concerns that draft reports, economic forecasts, and other confidential communications could be at risk, although the extent of any data exfiltration has not yet been established and CBOs work for Congress is continuing.
Scarlet
November 6, 2025
•[ ddos, hacktivism ]
Pro-Russian hacktivist group NoName057 claimed responsibility for a distributed denial-of-service attack that briefly disrupted the public websites of Belgian telecom operators Proximus and Scarlet and Ghent University Hospital in November 2025. According to the Belgian News Agency, Proximus technicians detected unusual traffic around 7:20 a.m., saw a sharp spike by 7:30, and deployed countermeasures that kept core systems running so overall impact on services remained very limited. Officials stressed that the DDoS campaign affected website availability only and did not involve any intrusion into internal networks or compromise of customer data.
Ghent University Hospital
November 6, 2025
•[ denial of service, hacktivism ]
According to Belgian News Agency coverage relayed by DataBreaches.net, pro Russian hacktivist group NoName057 claimed responsibility on Telegram for a distributed denial of service attack that briefly disrupted the public websites of Belgian telecom operators Proximus and Scarlet, as well as Ghent University Hospital, on a Wednesday morning in November 2025. Proximus said technicians detected unusual traffic around 7:20 and a sharp rise in volume shortly after, but countermeasures meant overall impact on service was very limited and core systems remained resilient. The group also boasted of targeting an internal Telenet portal, a claim Telenet publicly rejected, emphasizing that its systems were not hacked and no sites went offline, and authorities noted that such DDoS attacks do not involve any compromise of user data.
Abraham Andreu's computer (part of Andromeda botnet)
November 6, 2025
•[ botnet, malware ]
A ComputerHoy journalist describes deliberately infecting a Windows PC in 2025 with the Andrmeda malware, which enrolls machines into a botnet so attackers can download additional payloads and execute arbitrary files remotely. The piece walks through how the author obtained the malware sample, how the infection behaves on the system, the use of Spains INCIBE antibotnet service and security tools to detect and remove Andrmeda, and what readers should do if they discover their own devices are part of the botnet. This is a self-inflicted test infection rather than an unsolicited attack on an organization.
Microbix Biosystems Inc.
November 5, 2025
•[ ransomware, data leak ]
Microbix Biosystems disclosed that an international ransomware group infiltrated and corrupted one of its corporate servers, deploying ransomware that temporarily took file storage systems offline but did not disrupt manufacturing, safety or communications. The company successfully recovered the server and data from backups yet later learned that at least some data had been copied externally, including commercially sensitive information and employee data
Oscars Group
November 5, 2025
•[ ransomware, data leak ]
Insurance Business reports that Australian hospitality conglomerate Oscars Group was listed on the Medusa ransomware gang's leak site on November 5, 2025, with the criminals claiming to have exfiltrated more than one hundred and thirty thousand internal files and threatening to publish them unless a ransom of one hundred thousand US dollars is paid or daily fees are provided to delay release; samples posted as proof reportedly include invoices, staff rosters, event schedules, daily financial records and identity documents such as passports and driver licences, much of it tied to the recently acquired Lakes Resort Hotel in South Australia, indicating a significant data breach even though no operational outages have been publicly disclosed.
At least one policy expert on Iran
November 5, 2025
•[ phishing, credential theft, espionage ]
The Hacker News, citing a Proofpoint investigation, describes a newly identified threat cluster dubbed UNK_SmudgedSerpent conducting credential phishing and remote access operations against more than twenty Iran focused subject matter experts at a U.S. based foreign policy think tank between June and August 2025, amid heightened IranIsrael tensions. Attackers impersonated prominent policy figures and used benign email conversations to lure victims to fake Microsoft Teams and OnlyOffice login pages hosted on health themed domains that captured account credentials. In some cases the operation progressed to deploying legitimate remote monitoring tools such as PDQ Connect and ISL Online for hands on keyboard access, supporting longer term espionage against the target institution and aligning with tactics used by established Iranian cyber intelligence groups.
Kansas City Police Department
November 5, 2025
•[ data leak, hack, law enforcement ]
Reporting by KCUR, WIRED, and DataBreaches.net describes a major hack of the Kansas City, Kansas Police Department whose internal records were exfiltrated in 2024 and later published by transparency collective Distributed Denial of Secrets. The leaked cache, reportedly more than one terabyte in size, includes a secret Veracity Disclosure or Giglio List that identifies officers whose documented misconduct could undermine their testimony, along with supporting case files and internal correspondence. Police officials confirmed that the department experienced a cyber incident reported to federal agencies but criticized publication of the names as relying on stolen, unverified data and potentially harming officers reputations.
KakaoTalk account of a South Korea–based counselor
September 5, 2025
•[ spear-phishing, malware, credential theft ]
According to research by Genians reported by BleepingComputer, a North Korean activity cluster linked to APT37 and KONNI targets South Koreans via spear-phishing emails that spoof national agencies and deliver signed MSI installers. Once executed, the chain installs a remote access toolkit that steals Google and Naver account credentials, giving attackers full
RUAG LLC
November 4, 2025
•[ ransomware, data leak ]
Ransomware group Akira launched a double-extortion style attack against RUAG LLC, the Virginia-based liaison office of Swiss defence contractor RUAG MRO Holding, encrypting local systems while threatening to publish roughly 24 GB of company data including employee details and confidential military information. RUAG reports the incident is isolated to RUAG LLC thanks to autonomous IT systems and says other RUAG networks in Switzerland remain unaffected. Authorities had previously warned Swiss organizations about Akiras surge in ransomware activity, and RUAG is considering filing a criminal complaint as forensic investigat
Tisza Party App
November 4, 2025
•[ data leak, malware ]
Ahead of Hungarys 2026 parliamentary elections, opposition leader Pter Magyar said a malware-based cyberattack against his TISZA partys mobile application led to the illegal leak of his supporters personal data. Pro-government media reported that a database of roughly 200,000 names from the app, containing users names, email and postal addresses and phone numbers, was briefly published online before being taken down. Magyar alleges that international cyber pirates backed by Russian services have been attacking his systems for months to intimidate supporters and hinder planned primary elections on the app, prompting the party to move the vote to a different website.
Nikkei
November 4, 2025
•[ malware, data leak ]
Japanese media conglomerate Nikkei disclosed on 4 November 2025 that attackers had compromised its Slack messaging environment after malware on an employee's computer stole authentication credentials, which were then used to access multiple Slack accounts. The breach, discovered in September, exposed data for 17,368 employees and business partners, including their names, email addresses and chat histories. Nikkei forced password resets, reported the incident to Japan's Personal Information Protection Commission despite believing the stolen data falls outside formal reporting rules, and said no information related to confidential journalistic sources or reporting activities has been confirmed leaked.
SuperGrosz
November 3, 2025
•[ vulnerability exploit, cryptocurrency theft, phishing ]
On 3 November 2025, attackers exploited faulty access-control logic in Balancer's V2 Composable Stable Pools to drain more than $100 million in cryptocurrency, with blockchain security firms estimating overall losses above $120 million and at least $99 million in ETH. Balancer acknowledged the exploit, began a forensic investigation and placed any pools it could pause into recovery mode while warning customers about phishing messages spoofing its security team. Partner platforms such as Berachain temporarily halted their networks and froze some of the stolen funds as they worked to protect user assets across the wider DeFi ecosystem.
At least one drinking water supplier in Britain
November 3, 2025
•[ cyberattack, critical infrastructure, ransomware ]
A Recorded Future News investigation based on freedom-of-information disclosures from the UK Drinking Water Inspectorate found that five cyberattacks have been reported against Britains drinking water suppliers since the start of 2024, a record number over two years. The incidents, which affected out-of-NIS-scope IT systems rather than the operational technology delivering safe water, were shared with the regulator as resilience risks even though they did not trigger mandatory reporting thresholds. The findings highlight growing concern in British intelligence circles about ransomware and other attacks on critical infrastructure and are feeding into a planned Cyber Security and Resilience Bill to strengthen reporting and defences across essential services.
Gen Digital
November 3, 2025
•[ spear-phishing, malware, backdoor ]
Gen Digital reported that the North Korea-linked Kimsuky group used spear-phishing emails carrying a fake VPN invoice ZIP archive to compromise at least one South Korean victim and deploy a new HttpTroy backdoor. Execution of the malicious SCR file launches a three-stage chain (dropper, MemLoad loader and HttpTroy DLL) that displays a decoy PDF while silently establishing persistence via a scheduled task masquerading as an AhnLab update. HttpTroy then connects to a remote command-and-control server and gives the attackers full remote-access capabilities, including file transfer, command execution, reverse shell, process control and screenshot capture.
My ServiceOttawa
October 3, 2025
•[ data leak, phishing ]
On 3 October 2025 a My ServiceOttawa account using an automated bot exploited a bug in the service request lookup tool, allowing it to pull details of other residents service requests when a valid request number was supplied. The City of Ottawa says the breach was limited to email and postal addresses tied to about 2,454 service requests and did not include financial information, passwords or other sensitive data. The city immediately blocked the bot, patched the application, identified all potentially affected records and began notifying impacted residents with advice on spotting phishing or misuse of their contact details.
BLIK
November 1, 2025
•[ denial of service ]
Polish outlet GazetaPrawna, citing BLIKs statements and comments by the minister for digital affairs, reports that from the early morning of November 1, 2025 the operator observed a significant external distributed denial-of-service attack against Polish settlement infrastructure supporting the BLIK mobile payment system. The volumetric attack generated enough malicious traffic to disrupt the smooth processing of BLIK transactions and caused users to encounter problems with mobile payments. BLIKs operator said that it secured the infrastructure, continued to monitor the systems and by 10:33 stated that users should no longer experience transaction issues, later confirming on social media that BLIK functions had been restored and apologizing for the inconvenience while officials noted that such DDoS attacks occur regularly but are usually blocked before users notice.
Anne Helen Petersen's Substack account
October 1, 2025
•[ phishing, account takeover, impersonation ]
Former Buzzfeed journalist Anne Helen Petersen received a phishing email that imitated a security alert from Substack, warning that her ability to send emails would be frozen unless she verified her account. After she responded, attackers captured her credentials and gained unauthorized access to her Culture Study Substack newsletter and podcast account, which has more than 25,000 followers. The intruders changed the newsletters name to impersonate cryptocurrency wallet company Trezor and added thousands of new email addresses to the mailing list, hijacking her distribution channel to push a crypto-related scam through her audience.
Gcore
October 1, 2025
•[ DDoS attack, botnet, volumetric flood ]
Technology site CDR.cz and an underlying TechRadar report describe how gaming hosting and cloud provider Gcore was hit in October 2025 by one of the largest DDoS attacks ever recorded, a so called short burst volumetric flood that generated roughly 6 terabits per second of traffic and about 5.3 billion packets per second over 30 to 45 seconds. Analysis attributed the event to the AISURU botnet, with more than half of the malicious traffic sourced from Brazil and about a quarter from the United States, suggesting widespread abuse of poorly secured systems in those regions. Gcore stated that its globally distributed DDoS protection network, with over 210 points of presence and more than 200 terabits per second of filtering capacity, absorbed the attack and kept services online, but security experts warned that such brief, intense
At least one Ukrainian grain producer
June 1, 2025
•[ malware, wiper attack, state-sponsored attack ]
Russian state-backed threat group Sandworm, also known as APT44, used several data-wiping malware families in a series of destructive attacks against Ukrainian organizations in 2025, including newly reported operations targeting the countrys grain sector. An ESET APT activity report cited by BleepingComputer says that in June and September Sandworm deployed wipers like ZEROLOT and Sting against entities in the governmental, energy, logistics, and grain industries, with the grain sector highlighted as a less frequent but strategically important target. The wipers corrupt files, disk partitions, and master boot records in ways that prevent recovery, likely aiming to weaken Ukraines war economy by disrupting a critical export industry.
