Search results for port scanning attack | Breaking Cybersecurity News | The Hacker News

Have you ever used Shodan search engine? A publicly available service crawls the Internet looking for connected devices and list their open ports, services running, system information etc. Shodan search engine is majorly used by Hackers, developers, students and anyone else with a sense of curiosity to find Internet-facing vulnerable systems with open ports and insecure mechanisms for authentication and authorization i.e. Servers, Internet-Connected Cameras, Traffic Lights, And SCADA Systems. According to latest revelation from the whistleblower Edward Snowden , British spy agency GCHQ – counterpart of NSA – apparently uses their own port scanning service to target internet-connected systems in at least 27 countries, in an attempt to potentially exploit them. In top-secret documents published by Heise on Friday, the Port-scan is a part of the “Hacienda” program which scans for open ports on all public-facing servers to find out vulnerable applications running on the...

A group of academics from the University of California and Tsinghua University has uncovered a series of critical security flaws that could lead to a revival of DNS cache poisoning attacks. Dubbed " SAD DNS attack " (short for Side-channel AttackeD DNS), the technique makes it possible for a malicious actor to carry out an off-path attack, rerouting any traffic originally destined to a specific domain to a server under their control, thereby allowing them to eavesdrop and tamper with the communications. "This represents an important milestone — the first weaponizable network side channel attack that has serious security impacts," the researchers said. "The attack allows an off-path attacker to inject a malicious DNS record into a DNS cache." Tracked as CVE-2020-25705, the findings were presented at the ACM Conference on Computer, and Communications Security (CCS '20) held this week. The flaw affects operating systems Linux 3.18-5.10, Windows Serv...

You can't control when the next critical vulnerability drops. You can control how much of your environment is exposed when it does. The problem is that most teams have more internet-facing exposure than they realise. Intruder's Head of Security digs into why this happens and how teams can manage it deliberately. Time-to-exploit is shrinking The larger and less controlled your attack surface is, the more opportunities exist for exploitation. And the window to act on them is shrinking fast. For the most serious vulnerabilities, disclosure to exploitation can be as short as 24 to 48 hours. Zero Day Clock projects that time-to-exploit will be just minutes by 2028. That's not a lot of time when you consider what has to happen before a patch is deployed: running scans, waiting for results, raising tickets, agreeing priorities, implementing applies to ’the fix’ too, happy to drop ‘verifying’ if that’s easier. If disclosure lands out of hours, it takes even longer. In many c...

Entities in Armenia have come under a cyber attack using an updated version of a backdoor called  OxtaRAT  that allows remote access and desktop surveillance. "The tool capabilities include searching for and exfiltrating files from the infected machine, recording the video from the web camera and desktop, remotely controlling the compromised machine with TightVNC, installing a web shell, performing port scanning, and more," Check Point Research  said  in a report. The latest campaign is said to have commenced in November 2022 and marks the first time the threat actors behind the activity have expanded their focus beyond Azerbaijan. "The threat actors behind these attacks have been targeting human rights organizations, dissidents, and independent media in Azerbaijan for several years," the cybersecurity firm noted, calling the campaign Operation Silent Watch. The late 2022 intrusions are significant, not least because of the changes in the infection chain, the s...

A team of researchers from the University of Michigan discovered that hundreds of applications in Google Play Store have a security hole that could potentially allow hackers to steal data from and even implant malware on millions of Android smartphones. The University of Michigan team says that the actual issue lies within apps that create open ports — a known problem with computers — on smartphones. So, this issue has nothing to do with your device's operating system or the handset; instead, the origin of this so-called backdoor is due to insecure coding practices by various app developers. The team used its custom tool to scan over 100,000 Android applications and found 410 potentially vulnerable applications — many of which have been downloaded between 10 and 50 Million times and at least one app comes pre-installed on Android smartphones. Here I need you to stop and first let's understand exactly what ports do and what are the related threats. Ports can be eit...

Pentesting and vulnerability scanning are often confused for the same service. The problem is, business owners often use one when they really need the other. Let's dive in and explain the differences. People frequently confuse penetration testing and vulnerability scanning, and it's easy to see why. Both look for weaknesses in your IT infrastructure by exploring your systems in the same way an actual hacker would. However, there is a very important distinction between the two - and when each is the better option. Manual or automated? Penetration testing is a  manual  security assessment where cyber security professional attempts to find a way to break into your systems. It's a hands-on, in-depth test to evaluate security controls across a variety of systems, including web application, network and cloud environments. This kind of testing could take several weeks to complete, and due to its complexity and cost, is commonly carried out once a year. Vulnerability scanning,...

In the era of digitization and ever-changing business needs, the production environment has become a living organism. Multiple functions and teams within an organization can ultimately impact the way an attacker sees the organization's assets, or in other words, the external attack surface. This dramatically increases the need to define an exposure management strategy. To keep up with business needs while effectively assessing and managing cybersecurity risk, there are two primary elements that organizations should consider regarding their external attack surface: its  size  and its  attractiveness to attackers . While organizations are typically focused on accounting for the size of their attack surface, its attractiveness is not typically top of mind, though it may have a significant impact on risk. Attack Surface Size How many assets are accessible from the outside world?  There is a delicate balance between business needs and security. While there are good r...

In last year's edition of the  Security Navigator  we noted that the Manufacturing Industry appeared to be totally over-represented in our dataset of Cyber Extortion victims. Neither the number of businesses nor their average revenue particularly stood out to explain this. Manufacturing was also the most represented Industry in our CyberSOC dataset – contributing more Incidents than any other sector.  We found this trend confirmed in 2023 – so much in fact that we decided to take a closer look. So let's examine some possible explanations.  And debunk them. Hunting for possible explanations Manufacturing is still the most impacted industry in our Cyber Extortion dataset in 2023, as tracked by monitoring double-extortion leak sites. Indeed, this sector now represents more than 20% of all victims since we started observing the leak sites in the beginning of 2020. Approximately 28% of all our clients are from Manufacturing, contributing with an overall share of 3...

An updated version of a botnet malware called  KmsdBot  is now targeting Internet of Things (IoT) devices, simultaneously branching out its capabilities and the attack surface. "The binary now includes support for  Telnet scanning  and support for more CPU architectures," Akamai security researcher Larry W. Cashdollar  said  in an analysis published this month. The latest iteration, observed since July 16, 2023, comes months after it emerged that the botnet is being offered as a  DDoS-for-hire service  to other threat actors. The fact that it's being actively maintained indicates its effectiveness in real-world attacks. KmsdBot was  first documented  by the web infrastructure and security company in November 2022. It's mainly employed to target private gaming servers and cloud hosting providers, although it has since set its eyes on some Romanian government and Spanish educational sites. The malware is designed to scan random IP ad...

Cybersecurity researchers have detailed a new campaign dubbed OneClik that leverages Microsoft's ClickOnce software deployment technology and bespoke Golang backdoors to compromise organizations within the energy, oil, and gas sectors. "The campaign exhibits characteristics aligned with Chinese-affiliated threat actors, though attribution remains cautious," Trellix researchers Nico Paulo Yturriaga and Pham Duy Phuc said in a technical write-up. "Its methods reflect a broader shift toward 'living-off-the-land' tactics, blending malicious operations within cloud and enterprise tooling to evade traditional detection mechanisms." The phishing attacks, in a nutshell, make use of a .NET-based loader called OneClikNet to deploy a sophisticated Go-based backdoor codenamed RunnerBeacon that's designed to communicate with attacker-controlled infrastructure that's obscured using Amazon Web Services (AWS) cloud services. ClickOnce is offered by Micro...

An ongoing malware campaign has been found exploiting recently disclosed vulnerabilities in network-attached storage (NAS) devices running on Linux systems to co-opt the machines into an  IRC botnet  for launching distributed denial-of-service (DDoS) attacks and mining Monero cryptocurrency. The attacks deploy a new  malware variant called " FreakOut " by leveraging critical flaws fixed in Laminas Project (formerly Zend Framework) and Liferay Portal as well as an unpatched security weakness in TerraMaster, according to Check Point Research's new analysis published today and shared with The Hacker News. Attributing the malware to be the work of a long-time cybercrime hacker — who goes by the aliases Fl0urite and Freak on HackForums and Pastebin at least since 2015 — the researchers said the flaws —  CVE-2020-28188 ,  CVE-2021-3007 , and  CVE-2020-7961  — were weaponized to inject and execute malicious commands in the server. Regardless of the vul...

Distributed Denial of Service attacks have increased in scale, intensity and frequency. The wide range of motives for these attacks political , criminal, or social makes every merchant or organization with an online presence a potential target. Over the weekend Incapsula mitigated a unique DDoS attack against a large gaming website, in which they have discovered a DDoS attack using thousands of legitimate WordPress blogs without the need for them to be compromised. Incapsula released the list of approximately 2,500 WordPress sites from where the attack was originated, including some very large sites like Trendmicro.com, Gizmodo.it and Zendesk.com . In a recent report , we posted about another method for DDoS attacks using DNS amplification , where a DNS request is made to an open DNS resolver with the source IP address forged so that it is the IP address of the targeted site to which the response is thus sent, but this new method uses HTTP rather tha...

A financially motivated threat actor is actively scouring the internet for unprotected  Apache NiFi instances  to covertly install a cryptocurrency miner and facilitate lateral movement. The findings come from the SANS Internet Storm Center (ISC), which detected a spike in HTTP requests for “/nifi” on May 19, 2023. “Persistence is achieved via timed processors or entries to cron,”  said  Dr. Johannes Ullrich, dean of research for SANS Technology Institute. “The attack script is not saved to the system. The attack scripts are kept in memory only.” A honeypot setup allowed the ISC to determine that the initial foothold is weaponized to drop a shell script that removes the “/var/log/syslog” file, disables the firewall, and terminates competing crypto-mining tools, before downloading and launching the Kinsing malware from a remote server. It’s worth pointing out that  Kinsing  has a  track record  of  leveraging  publicly disclosed vul...

Remote Desktop Protocol (RDP) is an amazing technology developed by Microsoft that lets you access and control another computer over a network. It’s like having your office computer with you wherever you go. For businesses, this means IT staff can manage systems remotely, and employees can work from home or anywhere, making RDP a true game-changer in today’s work environment. But here’s the catch: because RDP is accessible over the internet, it’s also a prime target for unethical hackers. If someone gains unauthorized access, they could potentially take over your system. That’s why it’s so important to secure RDP properly. Why IT Teams Depend on RDP, Despite the Risks More than 50 percent of Kaseya’s small and medium-sized businesses (SMBs) and Managed Service Providers (MSPs) customers use RDP for daily operations due to its efficiency and flexibility: Reduces Costs and Downtime – IT teams can resolve technical issues remotely, eliminating travel expenses and delays. Supports B...

The Chinese-speaking threat actor known as Earth Lusca has been observed using a new backdoor dubbed KTLVdoor as part of a cyber attack targeting an unnamed trading company based in China. The previously unreported malware is written in Golang, and thus is a cross-platform weapon capable of targeting both Microsoft Windows and Linux systems. "KTLVdoor is a highly obfuscated malware that masquerades as different system utilities, allowing attackers to carry out a variety of tasks including file manipulation, command execution, and remote port scanning," Trend Micro researchers Cedric Pernet and Jaromir Horejsi said in an analysis published Wednesday. Some of the tools KTLVdoor impersonates include sshd, Java, SQLite, bash, and edr-agent, among others, with the malware distributed in the form of dynamic-link library (.dll) or a shared object (.so). Perhaps the most unusual aspect of the activity cluster is the discovery of more than 50 command-and-control (C&C) s...