Network Security


NEWS 
  • 6 New Vulnerabilities Found on D-Link Home Routers

    June 12, 2020

    On February 28, 2020, Palo Alto Networks’ Unit 42 researchers discovered six new vulnerabilities in D-Link wireless cloud routers running their latest firmware. The vulnerabilities were found in the DIR-865L model of D-Link routers, which is meant for home network use. The current trend towards working from home increases the likelihood of malicious attacks against home ...

  • NXNSAttack technique can be abused for large-scale DDoS attacks

    May 19, 2020

    A team of academics from Israel has disclosed today details about NXNSAttack, a vulnerability in DNS servers that can be abused to launch DDoS attacks of massive proportions. According to the research team, NXNSAttack impacts recursive DNS servers and the process of DNS delegation. Recursive DNS servers are DNS systems that pass DNS queries upstream in order to ...

  • Remote spring: the rise of RDP bruteforce attacks

    April 29, 2020

    With the spread of COVID-19, organizations worldwide have introduced remote working, which is having a direct impact on cybersecurity and the threat landscape. Alongside the higher volume of corporate traffic, the use of third-party services for data exchange, and employees working on home computers (and potentially insecure Wi-Fi networks), another headache for infosec teams is the ...

  • DHS CISA: Companies are getting hacked even after patching Pulse Secure VPNs

    April 17, 2020

    Companies that run Pulse Secure VPN servers are still at risk of getting hacked, despite patching vulnerable systems, cyber-security agencies from the US and Japan have warned this month. Pulse Secure VPN servers are enterprise-grade VPN gateways that companies use to let workers connect to internal company networks from across the internet. Last year, a major vulnerability ...

  • “Twin Flower” Campaign Jacks Up Network Traffic, Downloads Files, Steals Data

    April 13, 2020

    A campaign dubbed as “Twin Flower” (rough translation from Chinese) has been detected by Jinshan security researchers in a report published in Chinese. Trend Micro also analyzed related samples, which are detected as PUA.Win32.BoxMini.A, Trojan.JS.TWINFLOWER.A, and TrojanSpy.JS.TWINFLOWER.A. The files are believed to be downloaded unknowingly by users when visiting malicious sites or dropped into the system by ...

  • DarkHotel hackers use VPN zero-day to breach Chinese government agencies

    April 6, 2020

    Foreign state-sponsored hackers have launched a massive hacking operation aimed at Chinese government agencies and their employees. Attacks began last month, in March, and are believed to be related to the current coronavirus (COVID-19) outbreak. Chinese security-firm Qihoo 360, which detected the intrusions, said the hackers used a zero-day vulnerability in Sangfor SSL VPN servers, used to provide ...

  • The remote-working rush is creating a playground for spies and cybercrooks

    April 5, 2020

    Hundreds of millions of people are now working from home as a result of the ongoing COVID-19 coronavirus outbreak. Most organisations have a disaster recovery plan and a business continuity strategy in place to cope with the more predictable catastrophes, like a main office being unavailable for weeks or months. Far fewer are prepared for a crisis requiring ...

  • FakeNet Genie: Improving Dynamic Malware Analysis with Cheat Codes for FakeNet-NG

    April 2, 2020

    As developers of the network simulation tool FakeNet-NG, reverse engineers on the FireEye FLARE team, and malware analysis instructors, we get to see how different analysts use FakeNet-NG and the challenges they face. We have learned that FakeNet-NG provides many useful features and solutions of which our users are often unaware. In this blog post, ...

  • A mysterious hacker group is eavesdropping on corporate email and FTP traffic

    March 28, 2020

    Since at least early December 2019, a mysterious hacker group has been taking over DrayTek enterprise routers to eavesdrop on FTP and email traffic inside corporate networks, Chinese security firm Qihoo 360 said today. In a report published on the blog of its network security division Netlab, Qihoo said its researchers detected two different threat actors, each exploiting ...

  • New Mirai Variant Targets Zyxel Network-Attached Storage Devices

    March 19, 2020

    As soon as the proof-of-concept (PoC) for CVE-2020-9054 was made publicly available last month, this vulnerability was promptly abused to infect vulnerable versions of Zyxel network-attached storage (NAS) devices with a new Mirai variant – Mukashi. Mukashi brute forces the logins using different combinations of default credentials, while informing its command and control (C2) server of the successful ...

  • Wormable, Unpatched Microsoft Bug Threatens Corporate LANs

    March 11, 2020

    Microsoft is warning on a wormable, unpatched remote code-execution vulnerability in the Microsoft Server Message Block protocol – the same protocol that was targeted by the infamous WannaCry ransomware in 2017. The critical bug (CVE-2020-0796) affects Windows 10 and Windows Server 2019, and was not included in Microsoft’s Patch Tuesday release this week. The bug can be found in ...

  • Billions of Devices Open to Wi-Fi Eavesdropping Attacks

    February 26, 2020

    A serious vulnerability in Wi-Fi chips has been discovered that affects billions of devices worldwide, according to researchers. It allows attackers to eavesdrop on Wi-Fi communications. The bug (CVE-2019-15126) stems from the use of an all-zero encryption key in chips made by Broadcom and Cypress, according to researchers at ESET, which results in data decryption. This ...

  • How to Identify and Control DoH On Your Network

    February 25, 2020

    Along with bandwidth, privacy and security are the major concerns shared by everybody and everything on the Internet. Engaging in man-in-the-middle style attacks, today hackers from cyber criminal organizations, state sponsored or masse surveillance interception, can intercept clear-text DNS lookups, track and monitor users’ activities or interfere with commerce and undermine confidence in the platform. ...

  • Emotet Now Spreads via Wi-Fi

    February 13, 2020

    A new strain of Emotet was found spreading through wireless internet connections, deviating from the email spam campaigns that the malware commonly utilizes as a means of propagation. According to researchers from Binary Defense, this new loader type takes advantage of the wlanAPI interface to spread from an infected device to an unsecure Wi-Fi network. Emotet was discovered by Trend ...

  • FBI Says State Actors Hacked US Govt Network With Pulse VPN Flaw

    January 17, 2020

    FBI said in a flash security alert that nation-state actors have breached the networks of a US municipal government and a US financial entity by exploiting a critical vulnerability affecting Pulse Secure VPN servers. The US Cybersecurity and Infrastructure Security Agency (CISA) previously alerted organizations on January 10 to patch their Pulse Secure VPN servers against ongoing attacks trying to exploit the ...

  • ‘Ultimate’ MiTM Attack Steals $1M from Israeli Startup

    December 5, 2019

    Hackers pulled off an elaborate man-in-the-middle campaign to rip off an Israeli startup by intercepting a wire transfer from a Chinese venture-capital firm intended for the new business. New research by Check Point Software details how the security vendor uncovered the wire-transfer heist, in which an attacker used unique tactics—including communicating through email and even canceling a critical ...

  • New vulnerability lets attackers sniff or hijack VPN connections

    December 5, 2019

    Academics have disclosed this week a security flaw impacting Linux, Android, macOS, and other Unix-based operating systems that allows an attacker to sniff, hijack, and tamper with VPN-tunneled connections. The vulnerability — tracked as CVE-2019-14899 — resides in the networking stacks of multiple Unix-based operating systems, and more specifically, in how the operating systems reply to ...

  • Hotel front desks are now a hotbed for hackers

    November 28, 2019

    It seems that any possible way cybercriminals can exploit the hospitality industry, they will. Hotels, restaurant chains, and related tourism services have been subject to a range of techniques when it comes to cybercrime; the compromise of Point-of-Sale (PoS) terminals to harvest guest data, phishing emails sent to staff which are designed to give attackers access ...

  • Wizard Spider Upgrades Ryuk Ransomware to Reach Deep into LANs

    November 4, 2019

    The Ryuk ransomware has added two features to enhance its effectiveness: The ability to target systems that are in “standby” or sleep mode; and the use of Address Resolution Protocol (ARP) pinging to find drives on a company’s LAN. Both are employed after the initial network compromise of a victim organization. Ryuk, which is distributed by ...

  • Avast says hackers breached internal network through compromised VPN profile

    October 21, 2019

    Czech cyber-security software maker Avast disclosed today a security breach that impacted its internal network. In a statement published today, the company said it believed the attack’s purpose was to insert malware into the CCleaner software, similar to the infamous CCleaner 2017 incident. Avast said the breach occurred because the attacker compromised an employee’s VPN credentials, gaining access ...