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Citrix Data Breach – Iranian Hackers Stole 6TB of Sensitive Data

Citrix Data Breach – Iranian Hackers Stole 6TB of Sensitive Data

March 11, 2019Swati Khandelwal
Popular enterprise software company Citrix that provides services to the U.S. military, the FBI, many U.S. corporations, and various U.S. government agencies disclosed last weekend a massive data breach of its internal network by "international cyber criminals." Citrix said it was warned by the FBI on Wednesday of foreign hackers compromising its IT systems and stealing "business documents," adding that the company does not know precisely which documents the hackers obtained nor how they got in. However, the FBI believes that the miscreants likely used a "password spraying" attack where the attackers guessed weak passwords to gain an early foothold in the company's network in order to launch more extensive attacks. "While not confirmed, the FBI has advised that the hackers likely used a tactic known as password spraying, a technique that exploits weak passwords. Once they gained a foothold with limited access, they worked to circumvent
Someone Hacked 50,000 Printers to Promote PewDiePie YouTube Channel

Someone Hacked 50,000 Printers to Promote PewDiePie YouTube Channel

December 01, 2018Mohit Kumar
This may sound crazy, but it’s true! The war for "most-subscribed Youtube channel" crown between T-Series and PewDiePie just took an interesting turn after a hacker yesterday hijacked more than 50,000 internet-connected printers worldwide to print out flyers asking everyone to subscribe to PewDiePie YouTube channel. PewDiePie, whose real name is Felix Kjellberg, is a famous YouTuber from Sweden known for his game commentary and pranks and has had the most subscribers on YouTube since 2013. However, the channel owned by Bollywood record label T-Series has been catching up in recent months, and now both are hovering around 72.5 million YouTube subscribers. From this fear that PewDiePie won't remain the number one most-subscribed YouTuber in the world, an anonymous hacker (probably his die-hard fan) with the Twitter username " TheHackerGiraffe " came up with a hackish idea. TheHackerGiraffe scanned the Internet to find the list of vulnerable printers
Dell Resets All Customers' Passwords After Potential Security Breach

Dell Resets All Customers' Passwords After Potential Security Breach

November 29, 2018Mohit Kumar
Multinational computer technology company Dell disclosed Wednesday that its online electronics marketplace experienced a "cybersecurity incident" earlier this month when an unknown group of hackers infiltrated its internal network. On November 9, Dell detected and disrupted unauthorized activity on its network attempting to steal customer information, including their names, email addresses and hashed passwords. According to the company, the initial investigation found no conclusive evidence that the hackers succeeded to extract any information, but as a countermeasure Dell has reset passwords for all accounts on Dell.com website whether the data had been stolen or not. Dell did not share any information on how hackers managed to infiltrate its network at the first place or how many user accounts were affected, but the company did confirm that payment information and Social Security numbers were not targeted. "Credit card and other sensitive customer information
VPNFilter Router Malware Adds 7 New Network Exploitation Modules

VPNFilter Router Malware Adds 7 New Network Exploitation Modules

September 27, 2018Swati Khandelwal
Security researchers have discovered even more dangerous capabilities in VPNFilter —the highly sophisticated multi-stage malware that infected 500,000 routers worldwide in May this year, making it much more widespread and sophisticated than earlier. Attributed to Russia's APT 28, also known as 'Fancy Bear,' VPNFilter is a malware platform designed to infect routers and network-attached storage devices from 75 brands including Linksys, MikroTik, Netgear, TP-Link, QNAP, ASUS, D-Link, Huawei, ZTE, Ubiquiti, and UPVEL. In May, when VPNFilter infected half a million routers and NAS devices in 54 countries, the FBI seized a key command-and-control domain used by the malware and asked people to reboot their routers. Initially, it was found that VPNFilter had been built with multiple attack modules that could be deployed to the infected routers to steal website credentials and monitor industrial controls or SCADA systems, such as those used in electric grids, other infr
Hackers can compromise your network just by sending a Fax

Hackers can compromise your network just by sending a Fax

August 14, 2018Swati Khandelwal
What maximum a remote attacker can do just by having your Fax machine number? Believe it or not, but your fax number is literally enough for a hacker to gain complete control over the printer and possibly infiltrate the rest of the network connected to it. Check Point researchers have revealed details of two critical remote code execution (RCE) vulnerabilities they discovered in the communication protocols used in tens of millions of fax machines globally. You might be thinking who uses Fax these days! Well, Fax is not a thing of the past. With more than 300 million fax numbers and 45 million fax machines in use globally, Fax is still popular among several business organizations, regulators, lawyers, bankers, and real estate firms. Since most fax machines are today integrated into all-in-one printers, connected to a WiFi network and PSTN phone line, a remote attacker can simply send a specially-crafted image file via fax to exploit the reported vulnerabilities and seize co
Researchers Uncover New Attacks Against LTE Network Protocol

Researchers Uncover New Attacks Against LTE Network Protocol

June 30, 2018Swati Khandelwal
If your mobile carrier offers LTE, also known as the 4G network, you need to beware as your network communication can be hijacked remotely. A team of researchers has discovered some critical weaknesses in the ubiquitous LTE mobile device standard that could allow sophisticated hackers to spy on users' cellular networks, modify the contents of their communications, and even can re-route them to malicious or phishing websites. LTE, or Long Term Evolution, is the latest mobile telephony standard used by billions of people designed to bring many security improvements over the predecessor standard known as Global System for Mobile (GSM) communications. However, multiple security flaws have been discovered over the past few years, allowing attackers to intercept user's communications, spy on user phone calls and text messages, send fake emergency alerts, spoof location of the device and knock devices entirely offline. 4G LTE Network Vulnerabilities Now, security researchers
Nethammer—Exploiting DRAM Rowhammer Bug Through Network Requests

Nethammer—Exploiting DRAM Rowhammer Bug Through Network Requests

May 17, 2018Swati Khandelwal
Last week, we reported about the first network-based remote Rowhammer attack, dubbed Throwhammer , which involves the exploitation a known vulnerability in DRAM through network cards using remote direct memory access (RDMA) channels. However, a separate team of security researchers has now demonstrated a second network-based remote Rowhammer technique that can be used to attack systems using uncached memory or flush instruction while processing the network requests. The research was carried out by researchers who discovered Meltdown and Spectre CPU vulnerabilities, which is independent of the Amsterdam researchers who presented a series of Rowhammer attacks, including Throwhammer published last week. If you are unaware, Rowhammer is a critical issue with recent generation dynamic random access memory (DRAM) chips in which repeatedly accessing a row of memory can cause "bit flipping" in an adjacent row, allowing attackers to change the contents of the memory. The
New Rowhammer Attack Can Hijack Computers Remotely Over the Network

New Rowhammer Attack Can Hijack Computers Remotely Over the Network

May 11, 2018Mohit Kumar
Exploitation of Rowhammer attack just got easier. Dubbed ‘ Throwhammer ,’ the newly discovered technique could allow attackers to launch Rowhammer attack on the targeted systems just by sending specially crafted packets to the vulnerable network cards over the local area network. Known since 2012, Rowhammer is a severe issue with recent generation dynamic random access memory (DRAM) chips in which repeatedly accessing a row of memory can cause "bit flipping" in an adjacent row, allowing anyone to change the contents of computer memory. The issue has since been exploited in a number of ways to achieve remote code execution on the vulnerable computers and servers. Just last week, security researchers detailed a proof-of-concept Rowhammer attack technique, dubbed GLitch , that leverages embedded graphics processing units (GPUs) to carry out Rowhammer attacks against Android devices. However, all previously known Rowhammer attack techniques required privilege escal
Man Who Hacked Jail Systems to Release His Friend Early Gets 7-Years in Prison

Man Who Hacked Jail Systems to Release His Friend Early Gets 7-Years in Prison

May 01, 2018Mohit Kumar
Remember a young hacker who hacked jail systems in an attempt to release his prison inmate early? Well, that hacker will now be joining his inmate behind bars. Konrads Voits of Ypsilanti, Michigan, has been sentenced to seven years and three months in prison for attempting to hack the Washtenaw County Jail computer system and modifying prison records to get his friend released early. Besides spending 87 months in prison, Voits has also been ordered to pay $235,488 in fine to Washtenaw County for the cost accrued in investigating and cleaning up the infiltration that resulted in the compromise of personal information of around 1,600 employees, the US Justice Department announced last week. Between January 24th, 2017 and March 10th, 2017, Voits successfully tricked IT staff at Washtenaw County Jail into visiting a phony website at "ewashtenavv.org," which mimics the official URL, "ewashtenaw.org." The malicious website then installed malware on the IT
Casino Gets Hacked Through Its Internet-Connected Fish Tank Thermometer

Casino Gets Hacked Through Its Internet-Connected Fish Tank Thermometer

April 16, 2018Wang Wei
Internet-connected technology, also known as the Internet of Things (IoT), is now part of daily life, with smart assistants like Siri and Alexa to cars, watches, toasters, fridges, thermostats, lights, and the list goes on and on. But of much greater concern, enterprises are unable to secure each and every device on their network, giving cybercriminals hold on their network hostage with just one insecure device. Since IoT is a double-edged sword, it not only poses huge risks to enterprises worldwide but also has the potential to severely disrupt other organisations, or the Internet itself . There's no better example than Mirai , the botnet malware that knocked the world's biggest and most popular websites offline for few hours over a year ago. We have another great example that showcases how one innocent looking insecure IoT device connected to your network can cause security nightmares. Nicole Eagan, the CEO of cybersecurity company Darktrace, told attendees at
CredSSP Flaw in Remote Desktop Protocol Affects All Versions of Windows

CredSSP Flaw in Remote Desktop Protocol Affects All Versions of Windows

March 13, 2018Mohit Kumar
A critical vulnerability has been discovered in Credential Security Support Provider protocol (CredSSP) that affects all versions of Windows to date and could allow remote attackers to exploit RDP and WinRM to steal data and run malicious code. CredSSP protocol has been designed to be used by RDP (Remote Desktop Protocol) and Windows Remote Management (WinRM) that takes care of securely forwarding credentials encrypted from the Windows client to the target servers for remote authentication. Discovered by researchers at Cybersecurity firm Preempt Security, the issue (CVE-2018-0886) is a logical cryptographic flaw in CredSSP that can be exploited by a man-in-the-middle attacker with Wi-Fi or physical access to the network to steal session authentication data and perform a Remote Procedure Call attack. When a client and server authenticate over RDP and WinRM connection protocols, a man-in-the-middle attacker can execute remote commands to compromise enterprise networks. "A
New 4G LTE Network Attacks Let Hackers Spy, Track, Spoof and Spam

New 4G LTE Network Attacks Let Hackers Spy, Track, Spoof and Spam

March 05, 2018Swati Khandelwal
Security researchers have discovered a set of severe vulnerabilities in 4G LTE protocol that could be exploited to spy on user phone calls and text messages, send fake emergency alerts, spoof location of the device and even knock devices entirely offline. A new research paper [ PDF ] recently published by researchers at Purdue University and the University of Iowa details 10 new cyber attacks against the 4G LTE wireless data communications technology for mobile devices and data terminals. The attacks exploit design weaknesses in three key protocol procedures of the 4G LTE network known as attach, detach, and paging. Unlike many previous research, these aren't just theoretical attacks. The researchers employed a systematic model-based adversarial testing approach, which they called LTEInspector , and were able to test 8 of the 10 attacks in a real testbed using SIM cards from four large US carriers. Authentication Synchronization Failure Attack Traceability Attack Nu
Highly Critical Flaw (CVSS Score 10) Lets Hackers Hijack Oracle Identity Manager

Highly Critical Flaw (CVSS Score 10) Lets Hackers Hijack Oracle Identity Manager

October 31, 2017Swati Khandelwal
A highly critical vulnerability has been discovered in Oracle's enterprise identity management system that can be easily exploited by remote, unauthenticated attackers to take full control over the affected systems. The critical vulnerability tracked as CVE-2017-10151, has been assigned the highest CVSS score of 10 and is easy to exploit without any user interaction, Oracle said in its advisory  published Monday without revealing many details about the issue. The vulnerability affects Oracle Identity Manager (OIM) component of Oracle Fusion Middleware—an enterprise identity management system that automatically manages users' access privileges within enterprises. The security loophole is due to a "default account" that an unauthenticated attacker over the same network can access via HTTP to compromise Oracle Identity Manager. Oracle has not released complete details of the vulnerability in an effort to prevent exploitation in the wild, but here the "def
Here’s How Hackers Can Hijack Your Online Bitcoin Wallets

Here’s How Hackers Can Hijack Your Online Bitcoin Wallets

September 19, 2017Unknown
Researchers have been warning for years about critical issues with the Signaling System 7 (SS7) that could allow hackers to listen in private phone calls and read text messages on a potentially vast scale, despite the most advanced encryption used by cellular networks. Despite fixes being available for years, the global cellular networks have consistently been ignoring this serious issue, saying that the exploitation of the SS7 weaknesses requires significant technical and financial investment, so is a very low risk for people. However, earlier this year we saw a real-world attacks, hackers utilised this designing flaw in SS7 to drain victims' bank accounts by intercepting two-factor authentication code (one-time passcode, or OTP) sent by banks to their customers and redirecting it to themselves. If that incident wasn't enough for the global telecoms networks to consider fixing the flaws, white hat hackers from Positive Technologies now demonstrated how cybercriminals
Wikileaks Unveils 'Cherry Blossom' — Wireless Hacking System Used by CIA

Wikileaks Unveils 'Cherry Blossom' — Wireless Hacking System Used by CIA

June 15, 2017Swati Khandelwal
WikiLeaks has published a new batch of the ongoing Vault 7 leak , this time detailing a framework – which is being used by the CIA for monitoring the Internet activity of the targeted systems by exploiting vulnerabilities in Wi-Fi devices. Dubbed " Cherry Blossom ," the framework was allegedly designed by the Central Intelligence Agency (CIA) with the help of Stanford Research Institute (SRI International), an American nonprofit research institute, as part of its ‘Cherry Bomb’ project. Cherry Blossom is basically a remotely controllable firmware-based implant for wireless networking devices, including routers and wireless access points (APs), which exploits router vulnerabilities to gain unauthorized access and then replace firmware with custom Cherry Blossom firmware. "An implanted device [ called Flytrap ] can then be used to monitor the internet activity of and deliver software exploits to targets of interest." a leaked CIA manual  reads . "The wi
This CIA Tool Hacks Windows Computers Silently Over the Network

This CIA Tool Hacks Windows Computers Silently Over the Network

June 02, 2017Mohit Kumar
WikiLeaks has published a new batch of the ongoing Vault 7 leak , this time detailing an alleged CIA project that allowed the agency to turn Windows file servers into covert attack machines that can silently infect other computers of interest inside a targeted network. Codenamed Pandemic , the tool is a persistent implant for Microsoft Windows machines that share files with remote users on a local network. The documents leaked by the whistleblower organisation date from April 2014 to January 2015. According to WikiLeaks, Pandemic infect networks of Windows computers through the Server Message Block (SMB) file sharing protocol by replacing application code on-the-fly with a trojanized version of the software. "Pandemic is a tool which is run as kernel shellcode to install a file system filter driver," a leaked CIA manual reads. "The filter will 'replace' a target file with the given payload file when a remote user accesses the file via SMB (read-only, not w
Here’s How to Hack Windows/Mac OS X Login Password (When Locked)

Here’s How to Hack Windows/Mac OS X Login Password (When Locked)

September 07, 2016Wang Wei
A Security researcher has discovered a unique attack method that can be used to steal credentials from a locked computer ( but, logged-in ) and works on both Windows as well as Mac OS X systems. In his blog post published today, security expert Rob Fuller demonstrated and explained how to exploit a USB SoC-based device to turn it into a credential-sniffer that works even on a locked computer or laptop. Fuller modified the firmware code of USB dongle in such a way that when it is plugged into an Ethernet adapter, the plug-and-play USB device installs and acts itself as the network gateway, DNS server, and Web Proxy Auto-discovery Protocol (WPAD) server for the victim's machine. The attack is possible because most PCs automatically install Plug-and-Play USB devices, meaning "even if a system is locked out, the device [dongle] still gets installed," Fuller explains in his blog post . "Now, I believe there are restrictions on what types of devices are allowed to
STOP Rule 41 — FBI should not get Legal Power to Hack Computers Worldwide

STOP Rule 41 — FBI should not get Legal Power to Hack Computers Worldwide

June 23, 2016Mohit Kumar
We have been hearing a lot about Rule 41 after the US Department of Justice has pushed an update to the rule. The change to the Rule 41 of the Federal Rules of Criminal Procedure grants the FBI much greater powers to hack legally into any computer across the country, and perhaps anywhere in the world, with just a single search warrant authorized by any US judge. However, both civil liberties groups and tech companies have blasted the proposed change, saying it is an affront to the Fourth Amendment and would allow the cops and Feds in America to hack remotely into people's computers and phones around the world. Google, Electronic Frontier Foundation (EFF), Demand Progress, FightForTheFuture, TOR (The Onion Router), Private Internet Access and other VPN providers have joined their hands to block changes to Rule 41. " The U.S. government wants to use an obscure procedure—amending a federal rule known as Rule 41— to radically expand their authority to hack," the
Facebook Open Sources its Capture the Flag (CTF) Platform

Facebook Open Sources its Capture the Flag (CTF) Platform

May 11, 2016Mohit Kumar
Hacking into computer, networks and websites could easily land you in jail. But what if you could freely test and practice your hacking skills in a legally safe environment? Facebook just open-sourced its Capture The Flag (CTF) platform to encourage students as well as developers to learn about cyber security and secure coding practices. Capture the Flag hacking competitions are conducted at various cyber security events and conferences, including Def Con, in order to highlight the real-world exploits and cyber attacks. The CTF program is an effective way of identifying young people with exceptional computer skills, as well as teaching beginners about common and advanced exploitation techniques to ensure they develop secure programs that cannot be easily compromised. Facebook  CTF Video Demo: Since 2013, Facebook has itself hosted CTF competitions at events across the world and now, it is opening the platform to masses by releasing its source code on GitHub. "
Hackers Can Read Your Private SMS and Listen to Phone Calls

Hackers Can Read Your Private SMS and Listen to Phone Calls

December 19, 2014Swati Khandelwal
Security researchers have discovered a massive security flaw that could let hackers and cybercriminals listen to private phone calls and read text messages on a potentially vast scale – no matter if the cellular networks use the latest and most advanced encryption available. The critical flaw lies in the global telecom network known as Signal System 7 that powers multiple phone carriers across the world, including AT&T and Verizon , to route calls, texts and other services to each other. The vulnerability has been discovered by the German researchers who will present their findings at a hacker conference in Hamburg later this month. "Experts say it's increasingly clear that SS7, first designed in the 1980s, is riddled with serious vulnerabilities that undermine the privacy of the world's billions of cellular customers," said The Washington Post, which first uncovered flaws in the system earlier this year. NUMBER OF SECURITY FLAWS IN SS7 SS7 or
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