Cybersecurity researchers at GreyNoise have uncovered widespread exploitation of a critical zero-day vulnerability in Zyxel CPE Series devices, months after it was initially reported to the manufacturer. The flaw, identified as CVE-2024-40891, allows attackers to execute arbitrary commands on affected devices, potentially leading to data breaches, network infiltration, and complete system compromise. GreyNoise has disclosed the issue to raise awareness among organizations and individuals at risk, as mass exploitation attempts have already been observed.
The vulnerability, CVE-2024-40891, was first reported to Zyxel by researchers at VulnCheck in August 2024. However, Zyxel has yet to release a public advisory or an official CVE entry for the flaw, leaving users without a patch to mitigate the risk. GreyNoise collaborated with VulnCheck to disclose the issue, following standard security policies. A GreyNoise spokesperson stated, “Due to first-hand, confirmed mass exploitation attempts for this vulnerability, we chose to disclose this to raise awareness among those who may be impacted.”
Security analysts at Censys estimate that approximately 1,500 devices are online and potentially vulnerable, though definitive confirmation of affected versions is still pending. The National Vulnerability Database (NVD) has not yet provided additional details about the issue. To assess the extent of malicious activity, GreyNoise and VulnCheck conducted a joint investigation, revealing that attackers are actively targeting the flaw.
Researchers noted that CVE-2024-40891 shares similarities with another Zyxel vulnerability, CVE-2024-40890, which also involves authentication and command injection exploits. The key difference is that CVE-2024-40891 is exploited via telnet, while CVE-2024-40890 is HTTP-based. This latest vulnerability follows a recent warning from the Cybersecurity and Infrastructure Security Agency (CISA) and German authorities about another security flaw in Zyxel firewalls, CVE-2024-11667, which was exploited to deploy Helldown ransomware in early December.
With no official patch available, Zyxel users remain vulnerable to exploitation. Security experts urge organizations to implement temporary mitigation strategies to reduce the risk of compromise. Key recommendations include:
A VulnCheck spokesperson confirmed that the firm is actively working with Zyxel on the disclosure process and expects to share further insights in the coming week. In the meantime, organizations are advised to remain vigilant and take proactive steps to protect their networks.
The widespread exploitation of CVE-2024-40891 highlights the critical importance of timely vulnerability disclosure and patch management. As attackers continue to target Zyxel devices, organizations must prioritize cybersecurity measures to safeguard their systems and data. While waiting for an official patch, implementing temporary mitigation strategies and staying informed about updates can help reduce the risk of exploitation. This incident serves as a reminder of the ongoing challenges in securing network devices and the need for collaboration between manufacturers, researchers, and users to address vulnerabilities effectively.
In its efforts to better its cloud security, Microsoft has done much to remove any potential vulnerabilities and tightened the process of authenticating individuals. This comes after the tech giant saw several security breaches within the past year. Under the Secure Future Initiative launched in November 2023, Microsoft has so far purged 730,000 unused applications and deactivated 5.75 million inactive tenants in its cloud system. The initiative has been a direct response to cyber intrusions that had resulted in the revelation of sensitive data.
The firm has sought to minimise its attack surface by identifying dead or idle areas of its cloud infrastructure and is working to eliminate them. Removing hundreds of thousands of applications and millions of unused tenants works at making Microsoft shrink down the possible avenues the hackers may employ to penetrate it. Furthermore, Microsoft has sought to make the software production environment more secure by equipping the software teams with 15,000 locked-down devices. In its other security measure, the company conducted video-based identity verification for 95 percent of its production staff for further security in the identity authentication process.
Cybersecurity is one aspect where Microsoft has improved much. For instance, the identity management systems for its Entra ID and Microsoft Account (MSA) platforms have been remarkably enhanced.
These updates target better generation, storage, and rotation of access token signing keys as means to advance the protection of the public and government cloud environments. This is partly because of an incident in 2023, when hacking group Storm-0558 from China successfully accessed Exchange Online systems and penetrated the private email accounts of dozens of state officials.
The SFI project is the most ambitious cybersecurity effort Microsoft has undertaken to date, providing 34,000 engineers dedicated to bulking up the company's defences. It focuses mainly on six critical areas: identity and access control, securing cloud tenants and production systems, strengthening engineering systems, improving network security, enhancing threat detection, and perfecting incident response. By doing all of these broad strokes, the likelihood of any future breach of this scale is reduced.
Analysis by the US Department of Homeland Security's Cyber Safety Review Board had shown that a succession of security lapses at the company allowed these breaches. The inquiry, focused on the Storm-0558 intrusion, had asserted that it was time for Microsoft to strengthen its security posture, which primarily revolved around identity and authentication processes. Based on this, the company has moved very quickly to shore up weaknesses and prevent something similar from happening in the future.
Microsoft says it made strides in several areas in the latest report on SFI.
Unused applications and tenants removed reduce cloud attack surface. In network security, the firm now maintains a central inventory for more than 99% of physical assets, providing greater oversight.
Virtual networks with back-end connectivity are isolated from the corporate networks, which in turn is subjected to even more rigorous security audits. Centralised pipeline templates accounting for 85% of the production builds have been so far a part of the security. Personal access tokens now also have a much shorter life. Proof-of-presence checks are also instituted at the most sensitive points of the software development pipeline.
Beyond the technical, there have been organisations which are aimed at ensuring the executives are held responsible for security outcomes. There have been those who tied senior leadership compensation to specific security goals and that the company's threat intelligence team reports directly to the Chief Information Security Officer. This is in the way that it gives the assurance that security is top of the agenda across the organisation.
The Microsoft Secure Future Initiative is a reflection of its attempt to learn from previous failures in the area of security and succeed further in the cloud environment. The company intends to secure itself and, by extension, its customers from future cyber-attacks by enforcing identity verification, reducing attack surfaces, and having a strong network as well as engineering security. Hence, through continuous actions, Microsoft aims to ensure that such instances-where confidential and sensitive data are leaked-would not recur in the future.
Transport for London (TfL) recently confirmed that disabled passengers are the first group to feel the effects of a cyberattack that has hit their systems. This incident has severely impacted the Dial-a-Ride service, a specialised transport service designed for wheelchair users and individuals with long-term disabilities, leaving many unable to book their necessary door-to-door journeys.
TfL, the organisation responsible for managing London’s public transport network, initially acknowledged a cyber incident on September 2. In their first public statement, TfL reassured customers that no personal data had been compromised, and transport services across the network were unaffected. However, in the days following, it became clear that the cyberattack has caused more disruption than initially reported, particularly for disabled passengers who rely heavily on the Dial-a-Ride service.
The Dial-a-Ride service, which offers free transport for disabled passengers, was forced to suspend new bookings due to the ongoing cybersecurity incident. A recent update from TfL confirmed that the system is unable to process any new journey requests, inconveniencing those who depend on this service for mobility. In addition to suspending bookings, TfL also reported that many staff members operating the service have limited access to critical systems, making it difficult for them to respond to user inquiries or manage ongoing services efficiently.
For many disabled residents, Dial-a-Ride is a crucial service for daily travel. Without it, those with limited mobility are left without a reliable option to get around the city, exacerbating the challenges they already face in navigating public transportation.
Ransomware Likely Cause of the Attack
Although the full details of the cyberattack have not yet been disclosed, cybersecurity experts believe it may be a ransomware attack, a type of cybercrime where systems are locked down by hackers who demand payment in exchange for restoring access. The limited system access reported by TfL employees suggests that hackers may have taken control of essential systems, preventing the organisation from operating key services like Dial-a-Ride.
Mark Robertson, an expert from Acumen Cyber, noted that the involvement of Dial-a-Ride indicates the attack may be more serious than originally thought. He emphasised that being locked out of key systems is a common effect of ransomware, further hinting at the nature of the incident. However, he commended TfL for its incident response efforts, which have helped to manage the crisis and minimise further damage.
Despite the disruption, there has been some good news for Dial-a-Ride users. Following internal recovery measures, TfL announced that essential booking requests are now being accepted once again. Though services remain limited, there is optimism that the situation will continue to improve as the day progresses.
As TfL continues to address the issue, it serves as a reminder that cyberattacks can have far-reaching impacts, particularly on vulnerable populations such as disabled individuals who rely on services like Dial-a-Ride for their daily mobility needs. TfL’s handling of this situation will likely set an example for other organisations on how to manage similar incidents in the future.
There is a pressing need for both strong cyber defences and detailed response plans to minimise the fallout from these types of attacks.
Halliburton, one of the world’s largest energy companies, has confirmed that it was the victim of a cyberattack. Hackers infiltrated the company’s systems and stole sensitive information. The attack occurred last week, and Halliburton is still determining the extent of the data that was taken.
In a recent filing with government regulators, Halliburton acknowledged the breach but has yet to disclose the full details of what was stolen. The company is currently investigating the incident and deciding what legal notifications are required. In response to the attack, Halliburton took certain systems offline as a precaution and is working to restore normal operations, especially for its oil and fracking businesses.
When approached for additional comments, company spokesperson Amina Rivera declined to elaborate further, stating that Halliburton would not provide more information beyond what was mentioned in its official filing.
Although Halliburton has not officially confirmed it, there are signs that the cyberattack may have been part of a ransomware campaign. TechCrunch obtained a ransom note related to the incident, which claims that hackers encrypted Halliburton’s files and stole sensitive data. A group known as RansomHub is believed to be behind the attack. This gang is notorious for carrying out similar cyberattacks, using stolen data as leverage to demand ransom payments.
RansomHub typically publishes stolen files on its dark web platform when victims refuse to pay. So far, Halliburton has not been listed as one of RansomHub’s victims, but this could change if negotiations fail. RansomHub has been responsible for over 210 attacks since its rise to prominence earlier this year, and it has targeted other large organisations, including Change Healthcare.
Halliburton, with around 48,000 employees spread across various countries, is a major player in the global energy industry. In the past, the company gained notoriety due to its role in the Deepwater Horizon oil spill disaster in 2010, for which it paid over $1 billion in fines.
The recent cyberattack is expected to have financial repercussions for the company, though the exact costs are yet to be determined. In 2023, Halliburton reported $23 billion in revenue, with CEO Jeff Miller earning $19 million in total compensation. Halliburton has noted that it will continue to bear costs related to the cyberattack as they work on restoring systems and resolving the situation.
As the investigation unfolds, much of Halliburton’s online services remain down, and the company is assessing the full impact of the breach. Halliburton has been tight-lipped about its cybersecurity efforts, declining to provide information on who is currently overseeing their response.
This attack is a reminder of how large corporations remain vulnerable to cyber threats. Halliburton's situation underscores the importance of investing in strong cybersecurity measures to safeguard sensitive data and avoid disruptions in critical operations. The company will likely provide more updates as it works to recover from this breach.
A recent case has highlighted that ransomware threats can sometimes come from within an organisation. Daniel Rhyne, a 57-year-old IT administrator from Kansas City, Missouri, has been accused of holding his own company hostage by locking down their systems and demanding a ransom to restore access.
The incident occurred in November last year when Rhyne was employed at an industrial company based in Somerset County, New Jersey. According to the Federal Bureau of Investigation (FBI), Rhyne allegedly took control of the company’s network by resetting the passwords of network administrator accounts as well as those of hundreds of employees. He then proceeded to delete critical backups and locked out both servers and workstations, crippling the organisation’s operations.
An hour after initiating the attack, Rhyne allegedly sent an email to the company's employees informing them of the situation and demanding a ransom in exchange for unlocking the systems. The FBI claims this was an attempt at extortion, with Rhyne threatening further damage if his demands were not met.
Rhyne’s actions were investigated by the FBI, and he has been charged with multiple counts, including extortion, intentional damage to a protected computer, and wire fraud. Should he be convicted of all charges, he faces up to 35 years in prison and a $500,000 fine, as reported by The Register.
Several pieces of evidence were gathered by the FBI to support their case against Rhyne. For instance, he allegedly used a tool known as PsPasswd, a Windows Sysinternals utility, to reset user passwords. The new password set for the accounts was "TheFr0zenCrew!", a telling detail that investigators believe connects him directly to the attack. Rhyne also reportedly kept a hidden virtual machine (VM) on his company-issued laptop, allowing him to maintain remote access to the network's administrative controls.
Adding to the case, the FBI noted that Rhyne's digital activities prior to the attack were suspicious. He allegedly used his work laptop to search for ways to alter administrator passwords via command-line tools, which are often used by IT professionals to manage networks remotely. Investigators claim that on the day of the attack, Rhyne was seen logging into his work laptop, conducting these searches, and reviewing company password spreadsheets while also accessing the hidden VM.
The fact that he used his company-issued laptop to perform these actions leaves a strong digital trail linking him to the crime. The FBI’s detailed investigation paints a clear picture of how the attack was executed, utilising common IT tools to gain unauthorised control over the company’s systems.
If Rhyne is found guilty, his actions could serve as a warning to organisations about the potential for internal threats. It highlights the need for companies to have strong security protocols in place, not just to defend against external hackers but also to safeguard against malicious insiders who have privileged access to sensitive systems.
This case illustrates how cyberattacks are evolving and how attackers, even those within the organisation, can exploit their knowledge and access to launch devastating attacks. Organisations must remain vigilant and continually monitor for suspicious behaviour, no matter the source, to protect their critical digital infrastructure.
Unicoin, a leading cryptocurrency company, experienced a cyberattack beginning on August 9, 2024, which severely disrupted its operations for nearly four days. The breach occurred when a hacker gained unauthorised access to the company’s Google G-Suite account, affecting all employees using the "@unicoin.com" domain. As a result, employees were locked out of critical Google services like Gmail and Google Drive, causing major disruptions in internal communication and file sharing.
In a regulatory filing with the U.S. Securities and Exchange Commission (SEC), Unicoin detailed the extent of the attack, noting that the hacker not only altered account passwords but also restricted access to essential tools. The company managed to restore access to its systems by August 13, 2024. However, ongoing investigations have revealed additional issues stemming from the breach.
Several senior management email accounts were compromised, and further investigations uncovered anomalies in the personal information of employees and contractors. The company’s accounting department discovered several discrepancies, including an instance of identity forgery involving a contractor, which led to their immediate termination. Investigators are still determining whether these incidents are isolated or part of a larger cyber threat, potentially involving North Korean hackers.
Financial Impact and Investigation
Despite the severity of the breach, Unicoin has assured its stakeholders that there is no evidence of stolen funds or compromised cryptocurrency assets. While the situation is serious, the company stated that the attack has not immensely impacted its financial condition or operational performance. However, the full extent of the breach is still under review, and Unicoin has not ruled out the possibility of long-term financial consequences.
In its SEC filing, Unicoin emphasised that no immediate financial losses had been identified. The company has committed to continuing its assessment of the situation and will report any significant impact in future filings if necessary.
Cybersecurity Concerns in the Cryptocurrency Sector
Unicoin's adherence to regulatory compliance stands out in the cryptocurrency industry, where oversight is often limited. The company consistently files reports with the SEC, demonstrating its commitment to transparency. With more than $500 million in Unicoins sold and a diverse portfolio that includes real estate and equity investments, the recent cyberattack is a telling event of how even the well regulated firms are not immune to combating such vulnerabilities.
As investigations continue, the broader cryptocurrency industry will be closely monitoring Unicoin's response to this breach and the steps it takes to better amp up its cybersecurity defenses.
A scathing cyber attack has disrupted housing services in three Greater Manchester boroughs, leaving thousands of residents at risk of a phishing scam. The breach, which affected the software company Locata, has caused the temporary closure of housing websites for Manchester, Salford, and Bolton councils, and resulted in fraudulent emails being sent to users, urging them to provide sensitive personal information.
Widespread Disruption from Cyber Incidents
The cyber attack first emerged last week, targeting Locata’s software, which is widely used by local councils to manage housing applications and services. Over the weekend, the attack escalated, causing disruptions to the public-facing housing websites operated by Manchester, Salford, and Bolton councils. Users of these services were targeted with phishing emails that appeared legitimate, asking them to "activate your tenancy options" by clicking on a link and submitting their personal details. This scam has potentially compromised the security of many individuals.
Locata’s Response and Council Actions
Locata, the company responsible for providing housing software to several councils, acknowledged the security breach on July 29. In a public statement, the company expressed regret for the incident and assured the public that they were working urgently with cybersecurity experts to investigate and contain the breach. Locata informed the affected local authorities and emphasised their commitment to resolving the issue as quickly as possible.
In response, Manchester City Council confirmed that the breach led to scam emails being sent to some Manchester Move applicants. The council acted promptly by taking the affected website offline to prevent further breaches and initiated an investigation with the Information Commissioner’s Office. They advised residents to exercise caution, avoid interacting with suspicious emails, and refrain from clicking on unverified links.
Impact on Bolton and Salford Residents
Bolton Council also reported that the cyber attack had affected its housing service, Homes for Bolton, leading to a similar phishing scam. The council has urged residents to stay alert and provided guidance on steps to take if they had mistakenly interacted with the fraudulent emails, including following advice from the UK’s National Cyber Security Centre.
Salford City Council was among the first to experience the breach, which led to the temporary suspension of the Salford Home Search website. To protect residents, the council advised users to monitor their financial accounts closely, report any suspicious activity, change passwords, and contact Action Fraud if they experienced financial losses.
The investigation into the cyber attack is ongoing, with Locata working closely with affected local authorities to restore services securely. Authorities have urged the public to follow cybersecurity best practices, remain alert against phishing scams, and take necessary precautions to safeguard their personal information.
The growing risks associated with cyber threats and the importance of strong cybersecurity measures for both organisations and individuals cannot be overstated
Punjab and Sind Bank (PSB) recently issued a public notice alerting customers to a new scam involving fraudulent messages and malicious APK files. This scam threatens grave financial losses if customers do not take proper precautions.
How the APK Scam Works
Step 1: Creating Panic with Fake Messages
Scammers initiate the fraud by sending text messages that mimic legitimate bank communications. These messages claim that recipients must update their Know Your Customer (KYC) information to avoid having their bank accounts blocked. The fraudulent messages create a sense of urgency, making recipients more likely to follow the instructions.
Kaushik Ray, Chief Operating Officer of Whizhack Technologies, explains that these messages exploit users' fears and desires, bypassing rational judgement. The goal is to trick recipients into downloading a malicious APK file, a common format for Android apps.
Step 2: Installing Malicious APK Files
Once recipients are convinced by the false narrative, they are instructed to download and install an APK file. These files often contain malware. Upon installation, the malware grants hackers access and control over the victim's mobile device.
Step 3: Executing Cyber Attacks
With control of the device, hackers can perform various malicious activities. These include installing a keylogger to capture sensitive information like banking credentials and passwords, launching ransomware attacks that lock the device until a ransom is paid, and accessing the clipboard to steal copied information such as account numbers.
How to Protect Yourself from APK Scams
To protect against these scams, PSB advises customers to take the following precautions:
1. Avoid Downloading Files from Unknown Sources: Only download apps from trusted sources like the Google Play Store.
2. Do Not Click on Suspicious Links: Be wary of links received in unsolicited messages, even if they appear to be from your bank.
3. Block and Report Suspicious Contacts: If you receive a suspicious message, block the sender and report it to your bank or relevant authorities.
4. Never Share Personal Information Online: Do not disclose personal or financial information to unverified sources.
Why APK Scams Target Android Users
Ray highlights that this scam primarily targets Android users because APK files are specific to Android devices. iOS devices, which use a different file format called IPA, generally have stricter controls against installing third-party apps, making them less vulnerable to this type of attack. However, iOS users should remain vigilant against phishing and other scams.
Real-Life Impacts of the APK Scam
Imagine receiving a message that your bank account will be frozen if you do not update your KYC information immediately. This could lead to panic about how you will pay for everyday expenses like groceries, school fees, or utility bills. Scammers exploit this fear to convince people to download the malicious APK file, giving them access to your device and your money.
Stay alert, verify the authenticity of messages, and protect your personal information to safeguard your financial assets.