Network Security


NEWS 
  • 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 ...

  • Intelligence Agencies Warn Of Flaw With VPN Products

    October 9, 2019

    Both the US NSA and UK NCSC warn hackers are actively exploiting vulnerabilities in VPN products Both the US National Security Agency (NSA) and a GQHC agency in the United Kingdom have issued warnings about “multiple vulnerabilities in Virtual Private Network (VPN) applications.” Both the NSA and the UK’s National Cyber Security Centre (NCSC) warned that advanced persistent threat (APT) ...

  • D-Link Home Routers Open to Remote Takeover Will Remain Unpatched

    October 8, 2019

    D-Link won’t patch a critical unauthenticated command-injection vulnerability in its routers that could allow an attacker to remotely take over the devices and execute code. The vulnerability (CVE-2019-16920) exists in the latest firmware for the DIR-655, DIR-866L, DIR-652 and DHP-1565 products, which are Wi-Fi routers for the home market. D-Link last week told Fortinet’s FortiGuard Labs, ...

  • New Reductor Malware Hijacks HTTPS Traffic

    October 3, 2019

    Researchers have discovered a new malware strain, dubbed Reductor, that allows hackers to manipulate Hypertext Transfer Protocol Secure (HTTPS) traffic by tweaking a browser’s random numbers generator, used to ensure a private connection between the client and server. Once infected, Reductor is used to spy on a victim’s browser activity, said the Global Research and Analysis Team (GReAT) ...

  • A Chinese APT is now going after Pulse Secure and Fortinet VPN servers

    September 5, 2019

    A group of Chinese state-sponsored hackers is targeting enterprise VPN servers from Fortinet and Pulse Secure after details about security flaws in both products became public knowledge last month. The attacks are being carried out by a group known as APT5 (also known as Manganese), ZDNet has learned from sources familiar with the attacks. According to a ...

  • Firefox And Chrome Fight Back Against Kazakhstan’s Spying

    August 21, 2019

    Against the backdrop of China, Russia, and Iran working to sequester their own private, national internets, other countries like Kazakhstan have experimented with similar balkanization and internet-control initiatives. Kazakhstan first piloted a monitoring system in 2015 that would offer access to all web traffic within the country, even encrypted data. After fierce debate and some legal hurdles over the ...

  • Router Network Isolation Broken By Covert Data Exfiltration

    August 18, 2019

    Software-based network isolation provided by routers is not as efficient as believed, as hackers can smuggle data between the networks for exfiltration. Most modern routers offer the possibility to split the network into multiple segments that work separately. One example is a guest network that works in parallel with the host. The boundary insulates sensitive or critical ...

  • How the Stars are Aligning Around Zero Trust

    July 2, 2019

    The proper implementation of Zero Trust depends upon a well-defined strategy focused on a holistic approach towards protecting your data wherever it resides It’s no surprise that organizations moving to the cloud are looking at Zero Trust. Zero Trust provides a model for designing networks and systems to address the modern threat landscape. It is based ...