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Feedly and Evernote Hit by DDoS Attacks, Extortion Demands

Feedly and Evernote Hit by DDoS Attacks, Extortion Demands

June 12, 2014Swati Khandelwal
Yesterday, the most popular RSS reader Feedly was down as a result of a large scale distributed-denial-of service (DDoS) attack carried by the cybercriminals to extort money. On Wednesday, the Feedly was temporarily unavailable for its users. Feedly posted details of the attack at 5:00 AM ET on its blog saying that they were under a Distributed Denial of Service (DDoS) attack and cyber-criminals were demanding money in return for returning the service to its normal operations. " Criminals are attacking feedly with a distributed denial of service attack (DDoS). The attacker is trying to extort us money to make it stop, " Edwin Khodabakchian, founder and CEO of Feedly said in a statement on Wednesday. He also expressed regret, " We want to apologize for the inconvenience. Please know that you data is safe and you will be able to re-access your feedly as soon as the attack is neutralized. " Feedly is a very popular RSS feed service which is available for desktop, iOS and
Bugs in Managed DNS Services Cloud Let Attackers Spy On DNS Traffic

Bugs in Managed DNS Services Cloud Let Attackers Spy On DNS Traffic

August 11, 2021Ravie Lakshmanan
Cybersecurity researchers have disclosed a new class of vulnerabilities impacting major DNS-as-a-Service (DNSaaS) providers that could allow attackers to exfiltrate sensitive information from corporate networks. "We found a simple loophole that allowed us to intercept a portion of worldwide dynamic DNS traffic going through managed DNS providers like Amazon and Google," researchers Shir Tamari and Ami Luttwak from infrastructure security firm Wiz  said . Calling it a "bottomless well of valuable intel," the treasure trove of information contains internal and external IP addresses, computer names, employee names and locations, and details about organizations' web domains. The findings were  presented  at the Black Hat USA 2021 security conference last week. "The traffic that leaked to us from internal network traffic provides malicious actors all the intel they would ever need to launch a successful attack," the researchers added. "More than t
Chinese Electronics Firm to Recall its Smart Cameras recently used to Take Down Internet

Chinese Electronics Firm to Recall its Smart Cameras recently used to Take Down Internet

October 24, 2016Swati Khandelwal
You might be surprised to know that your security cameras, Internet-connected toasters and refrigerators may have inadvertently participated in the massive cyber attack that broke a large portion of the Internet on Friday. That's due to massive Distributed Denial of Service (DDoS) attacks against Dyn, a major domain name system (DNS) provider that many sites and services use as their upstream DNS provider for turning IP addresses into human-readable websites. The result we all know: Twitter, GitHub, Amazon, Netflix, Pinterest, Etsy, Reddit, PayPal, and AirBnb, were among hundreds of sites and services that were rendered inaccessible to Millions of people worldwide for several hours. Why and How the Deadliest DDoS Attack Happened It was reported that the Mirai bots were used in the massive DDoS attacks against DynDNS, but they "were separate and distinct" bots from those used to execute record-breaking DDoS attack against French Internet service and hosting
Anonymous Hacker take down GoDaddy with IRC Bots

Anonymous Hacker take down GoDaddy with IRC Bots

September 11, 2012Mohit Kumar
GoDaddy.com, which hosts millions of websites mostly for small businesses, said Monday it was investigating an outage that had knocked some of its customers offline. A hacker using the " Anonymous Own3r " Twitter account claimed credit for the outage, " Hello https://godaddy.com/ now yes! all servers #tangodown by @AnonymousOwn3r ," a tweet said. We talk with  Anonymous Own3r to find out the way he used to take down this giant server. Hacker said," I am using thousand of Hacked server as bots to perform the attack. Sending dos attack commands using IRC  to all of them together. I just upload IRC connect on each server to control my every slave by commands ." On further talk, we came to know that he use  DDOS IRC Bot script , available on Pastebin . Its really easy to use, hack randomly hundreds of Servers online and upload your Script. Now just via IRC you can control your slaves to perform a huge DDOS attack. Email services from the company, and GoDaddy
An Army of Million Hacked IoT Devices Almost Broke the Internet Today

An Army of Million Hacked IoT Devices Almost Broke the Internet Today

October 22, 2016Unknown
A massive Distributed Denial of Service (DDoS) attack against Dyn , a major domain name system (DNS) provider, broke large portions of the Internet on Friday, causing a significant outage to a ton of websites and services, including Twitter, GitHub, PayPal, Amazon, Reddit, Netflix, and Spotify. But how the attack happened? What's the cause behind the attack? Exact details of the attack remain vague, but Dyn reported a huge army of hijacked internet-connected devices could be responsible for the massive attack. Yes, the same method recently employed by hackers to carry out record-breaking DDoS attack of over 1 Tbps against France-based hosting provider OVH. According to security intelligence firm Flashpoint , Mirai bots were detected driving much, but not necessarily all, of the traffic in the DDoS attacks against DynDNS. Mirai is a piece of malware that targets Internet of Things (IoT) devices such as routers, and security cameras, DVRs, and enslaves vast numbers of
Mirai Botnet Itself is Flawed; Hacking Back IoTs Could Mitigate DDoS Attacks

Mirai Botnet Itself is Flawed; Hacking Back IoTs Could Mitigate DDoS Attacks

October 29, 2016Mohit Kumar
The infamous botnet that was used in the recent massive distributed denial of service (DDoS) attacks against the popular DNS provider Dyn, causing vast internet outage  last Friday, itself is flawed. Yes, Mirai malware, which has already enslaved millions of Internet of Things (IoT) devices across 164 countries, contains several vulnerabilities that might be used against it in order to destroy botnet's DDoS capabilities and mitigate future attacks. Early October, the developer of the malware publically released the source code of Mirai , which is designed to scan for IoT devices – mostly routers, cameras, and DVRs – that are still using their default passwords and then enslaves them into a botnet, which is then used to launch DDoS attacks. However, after a close look at the source code, a researcher discovered three vulnerabilities, one of which could be used to shut down Mirai's ability to flood targets with HTTP requests. A stack buffer overflow vulnerability wa
DoubleDirect MitM Attack Targets Android, iOS and OS X Users

DoubleDirect MitM Attack Targets Android, iOS and OS X Users

November 22, 2014Wang Wei
Security researchers have discovered a new type of "Man-in-the-Middle" (MitM) attack in the wild targeting smartphone and tablets users on devices running either iOS or Android around the world. The MitM attack, dubbed DoubleDirect , enables an attacker to redirect a victim's traffic of major websites such as Google, Facebook and Twitter to a device controlled by the attacker. Once done, cyber crooks can steal victims' valuable personal data, such as email IDs, login credentials and banking information as well as can deliver malware to the targeted mobile device. San Francisco-based mobile security firm Zimperium detailed the threat in a Thursday blog post , revealing that the DoubleDirect technique is being used by attackers in the wild in attacks against the users of web giants including Google, Facebook, Hotmail, Live.com and Twitter, across 31 countries, including the U.S., the U.K. and Canada. DoubleDirect makes use of ICMP (Internet Control Message P
5 Major Russian Banks Hit With Powerful DDoS Attacks

5 Major Russian Banks Hit With Powerful DDoS Attacks

November 11, 2016Swati Khandelwal
Distributed Denial of Service (DDoS) attacks have risen enormously in past few months and, mostly, they are coming from hacked and insecure internet-connected devices, most commonly known as Internet of Things (IoT). Recent DDoS attack against DNS provider Dyn that brought down a large chunk of the Internet came from hacked and vulnerable IoT devices such as DVRs, security cameras, and smart home appliances. This DDoS was the biggest cyber attack the world has ever seen. Now, in the latest incident, at least five Russian banks have been subject to a swathe of DDoS attacks for two days, said the Russian banking regulator. The state-owned Sberbank was one of the five targets of the attacks that began on last Tuesday afternoon and lasted over the next two days. According to Kaspersky Lab, the longest attack last for 12 hours and peaked at 660,000 requests per second came from a botnet of at least 24,000 hacked devices located in 30 countries. Although the culprit appears
China hit by massive DDoS attack causing the Internet inaccessibility for hours

China hit by massive DDoS attack causing the Internet inaccessibility for hours

August 27, 2013Anonymous
During the weekend China's Internet was taken down by a powerful distributed denial of service (DDoS) attack on the .cn domain slowed and blocked Internet access inaccessibility for hours. Security expert clarified that China could have been perpetrated by sophisticated hackers or by a single individual. The China Internet Network Information Center [ CINIC ] reported that the attack began at 02:00 local time on Sunday with a peek at 04:00 that made it the largest DDoS attack the country's networks have ever faced. The CCINIC is responsible for registering sites in the .cn domain. Before malicious coders can launch a DDoS attack, they must infect the computers of unsuspecting users, often by tricking people into installing malware on their computers. The China Internet Network Information Center confirmed the attack with an official statement informing internet users that it is gradually restoring web services and that will operate to improve the security leve
SNMP Reflection DDoS Attacks on the Rise

SNMP Reflection DDoS Attacks on the Rise

May 23, 2014Swati Khandelwal
The DDoS techniques have massively increased with the attackers becoming more skillful at working around the network security. A massive 300Gbps DDoS attack launched against Spamhaus website almost broke the Internet a year ago and also earlier this year, hackers have succeeded in reaching new heights of the massive DDoS attack targeting content-delivery and anti-DDoS protection firm CloudFlare, reaching more than 400Gbps at its peak of traffic. Akamai's Prolexic Security Engineering and Response Team (PLXsert) issued a threat advisory on Thursday reporting a significant surge in DDoS attacks last month abusing the Simple Network Management Protocol (SNMP) interface in network devices. Simple Network Management Protocol (SNMP) is a UDP-based protocol which is commonly known and often used to manage network devices. SNMP is typically used in devices such as printers, routers and firewalls that can be found in the home and enterprise environments as well. Just as D
Google Public DNS Server Traffic Hijacked

Google Public DNS Server Traffic Hijacked

March 17, 2014Mohit Kumar
The Internet is becoming a dangerous place day-by-day and especially for those innocent web users who rely on 3rd party services. The latest bad news is that the World's largest and most widely used Google's free public DNS (Domain name system) resolvers  raised   security red flags yesterday. DNS is the master address list for the Internet, which translates IP addresses into human readable form and vice versa. According to Internet monitoring firm BGPmon , Google's DNS server 8.8.8.8 /32 was hijacked yesterday for 22 minutes. The Google's DNS server handles around 150 billion queries a day and during the 22 minutes of hijacking, millions of Internet users, including Financial institutions , Governments were redirected to BT's (British multinational telecommunications services company) Latin America division in Venezuela and Brazil. It is suspected that Hackers exploited a well-known  vulnerability in the so-called Border Gateway Protocol ( BGP) , which
New Browser Attack Allows Tracking Users Online With JavaScript Disabled

New Browser Attack Allows Tracking Users Online With JavaScript Disabled

March 11, 2021Ravie Lakshmanan
Researchers have discovered a new side-channel that they say can be reliably exploited to leak information from web browsers that could then be leveraged to track users even when JavaScript is completely disabled. "This is a side-channel attack which doesn't require any JavaScript to run," the researchers said. "This means script blockers cannot stop it. The attacks work even if you strip out all of the fun parts of the web browsing experience. This makes it very difficult to prevent without modifying deep parts of the operating system." In avoiding JavaScript, the side-channel attacks are also architecturally agnostic, resulting in microarchitectural website fingerprinting attacks that work across hardware platforms, including Intel Core, AMD Ryzen, Samsung Exynos 2100, and Apple M1 CPUs — making it the first known side-channel attack on the iPhone maker's new ARM-based chipsets. The  findings , which come from a group of academics from the Ben-Gurion U
Cybercriminals Hijack Router DNS to Distribute Android Banking Trojan

Cybercriminals Hijack Router DNS to Distribute Android Banking Trojan

April 16, 2018Swati Khandelwal
Security researchers have been warning about an ongoing malware campaign hijacking Internet routers to distribute Android banking malware that steals users' sensitive information, login credentials and the secret code for two-factor authentication. In order to trick victims into installing the Android malware, dubbed Roaming Mantis , hackers have been hijacking DNS settings on vulnerable and poorly secured routers . DNS hijacking attack allows hackers to intercept traffic, inject rogue ads on web-pages and redirect users to phishing pages designed to trick them into sharing their sensitive information like login credentials, bank account details, and more. Hijacking routers' DNS for a malicious purpose is not new. Previously we reported about widespread DNSChanger and Switcher —both the malware worked by changing the DNS settings of the wireless routers to redirect traffic to malicious websites controlled by attackers. Discovered by security researchers at Kaspersk
SRTT Vulnerability in BIND Software Puts DNS Protocol Security At Risk

SRTT Vulnerability in BIND Software Puts DNS Protocol Security At Risk

May 06, 2014Swati Khandelwal
After the Heartbleed bug that exposed half of the Internet vulnerable to hackers thereby marking as one of the largest Internet vulnerability in recent history, the critical flaw in the implementation of the DNS protocol could also represent a serious menace to the Internet security. A Serious security vulnerability has been discovered in the algorithms of DNS software – BIND by the two Israeli students ' Roee Hay ' and ' Jonathan Kalechstein ', who are working under a project out at the Laboratory of Computer Communication & Networking in the Faculty of Computer Science at the Technion , which was led by Dr. Gabi Nakibly from Rafael (Rafael Advanced Defense Systems Ltd.). Although, Technion students have not provided any detail explanation about the vulnerability , but indicated that by exploiting the DNS protocol flaw an attacker could redirect the users who are trying to visit a legitimate website to a fake and bogus website which the attacker con
BitTorrent Fixes Reflective DDoS Attack Security Flaw

BitTorrent Fixes Reflective DDoS Attack Security Flaw

August 28, 2015Swati Khandelwal
Two weeks ago, we reported how a serious flaw in the popular peer-to-peer BitTorrent file sharing protocols could be exploited to carry out a devastating distributed denial of service (DDoS) attack, allowing lone hackers with limited resources to take down large websites. Good news is that the developers of BitTorrent have fixed the security issue in its service that is being used by hundreds of Millions of users worldwide. In a blog post published Thursday, BitTorrent announced that the flaw was resided in a reference implementation of the Micro Transport Protocol (uTP) called libuTP , which is used by many widely used BitTorrent clients such as μTorrent , Vuze and Mainline . The San Francisco company also announced that it has rolled out a patch for its libuTP software that will stop miscreants from abusing the p2p protocol to conduct Distributed Reflective Denial-of-Service (DRDoS) attacks. DRDoS attack is a more sophisticated form of conventional DDoS att
Linux TCP Flaw allows Hackers to Hijack Internet Traffic and Inject Malware Remotely

Linux TCP Flaw allows Hackers to Hijack Internet Traffic and Inject Malware Remotely

August 11, 2016Swati Khandelwal
If you are using the Internet, there are the possibilities that you are open to attack. The Transmission Control Protocol (TCP) implementation in all Linux systems deployed since 2012 ( version 3.6 and above of the Linux kernel ) poses a serious threat to Internet users, whether or not they use Linux directly. This issue is troubling because Linux is used widely across the Internet, from web servers to Android smartphones, tablets, and smart TVs. Researchers have uncovered a serious Internet flaw, which if exploited, could allow attackers to terminate or inject malware into unencrypted communication between any two vulnerable machines on the Internet. The vulnerability could also be used to forcefully terminate HTTPS encrypted connections and downgrade the privacy of secure connections, as well as also threatens anonymity of Tor users by routing them to certain malicious relays. The flaw actually resides in the design and implementation of the Request for Comments: 5961 ( RF
Chinese Government Accused of Intercepting Traffic Between Google and CERNET

Chinese Government Accused of Intercepting Traffic Between Google and CERNET

September 08, 2014Mohit Kumar
So far, we all are well aware of the fact that Chinese have had a past filled with cases of Cyber Crime. China is the world's largest exporter of IT goods, but it has been criticized by many countries due to suspected backdoors in its products, including United States which has banned its several major government departments, including NASA, Justice and Commerce Departments, from purchasing Chinese products and computer technology. The new exposure indicates the same. Chinese Government is running a man-in-the-middle (MitM) cyber attack campaign on SSL encrypted traffic between the country's education network and Google. In an effort to monitor its users of China Education and Research Network (CERNET) , Chinese authorities has started intercepting encrypted traffic to and from Google's servers, the non-profit organization GreatFire reported on Thursday. However, just like many other foreign websites, Google is blocked in China. Because Google is one of the vast and v
Who Needs a Botnet when you have a 4 Gbps DDoS Cannon?

Who Needs a Botnet when you have a 4 Gbps DDoS Cannon?

April 24, 2013Mohit Kumar
In recent months the DDoS world has shifted from complex small scale Botnet attacks to much larger network based DDoS attacks , perpetrated largely by hijacked web servers. How many of these hijacked servers are out there remains to be seen. However, Incapsula recently got a very good idea of just how large these DDoS cannons are getting. Last Saturday Incapsula mitigated a rather small, 4Gbps DDoS attack, but this time it had a different pattern that attracted our attention. At first sight the attack seemed rather simple, generating 8 million DNS queries per second, to many domains, from spoofed IP addresses (using real domain name servers' IPs). But this time it included a hint about where it was coming from: all that traffic was coming from the same source. Probably on the same network, maybe even the same device. Tracing it to a single Source - TTL Giveaway Incapsula were able to trace the attack to a single source because this time the attackers slipped-u
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