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Linux malware includes viruses, Trojans, worms and other types of malware that affect the Linux family of operating systems. Linux, Unix and other Unix-like computer operating systems are generally regarded as very well-protected against, but not immune to, computer viruses.
A botnet is a group of Internet-connected devices, each of which runs one or more bots. Botnets can be used to perform Distributed Denial-of-Service (DDoS) attacks, steal data, send spam, and allow the attacker to access the device and its connection. The owner can control the botnet using command and control (C&C) software. The word "botnet" is a portmanteau of the words "robot" and "network". The term is usually used with a negative or malicious connotation.
Eggdrop is a popular IRC bot and the oldest that is still being maintained.
Rizon is a large Internet Relay Chat (IRC) network with an average of around 20,000 users. The IRC network itself ranks number 5 among the largest IRC networks. Rizon is popular with many anime fansubbing groups who work online, many of whom provide their content through XDCC via IRC bots in their distribution channels. It is also used by many users of eRepublik as a means of communication. File sharing of other copyrighted material such as Warez is also common in some channels on the network.
Toxbot is a computer worm that was primarily active in 2005. On infected computers, it opened up a backdoor to allow command and control over the IRC network, thus creating a botnet that at its peak comprised about 1.5 million computers. The two makers of the botnet were arrested in October 2005 and received jail sentences of 24 and 18 months from a Dutch court.
Operation: Bot Roast is an operation by the FBI to track down bot herders, crackers, or virus coders who install malicious software on computers through the Internet without the owners' knowledge, which turns the computer into a zombie computer that then sends out spam to other computers from the compromised computer, making a botnet or network of bot infected computers. The operation was launched because the vast scale of botnet resources poses a threat to national security.
The Storm botnet or Storm worm botnet was a remotely controlled network of "zombie" computers that had been linked by the Storm Worm, a Trojan horse spread through e-mail spam. At its height in September 2007, the Storm botnet was running on anywhere from 1 million to 50 million computer systems, and accounted for 8% of all malware on Microsoft Windows computers. It was first identified around January 2007, having been distributed by email with subjects such as "230 dead as storm batters Europe," giving it its well-known name. The botnet began to decline in late 2007, and by mid-2008 had been reduced to infecting about 85,000 computers, far less than it had infected a year earlier.
Owen Thor Walker is a computer hacker living in New Zealand, who was discharged without conviction despite pleading guilty to several charges of 'cybercrime'. In 2008 he admitted to being the ringleader of an international hacking organization estimated to have caused $26 million worth of damage.
Srizbi BotNet is considered one of the world's largest botnets, and responsible for sending out more than half of all the spam being sent by all the major botnets combined. The botnets consist of computers infected by the Srizbi trojan, which sent spam on command. Srizbi suffered a massive setback in November 2008 when hosting provider Janka Cartel was taken down; global spam volumes reduced up to 93% as a result of this action.
On May 9, 2006, Jeanson James Ancheta became the first person to be charged for controlling large numbers of hijacked computers or botnets.
Zeus, ZeuS, or Zbot is a Trojan horse malware package that runs on versions of Microsoft Windows. While it can be used to carry out many malicious and criminal tasks, it is often used to steal banking information by man-in-the-browser keystroke logging and form grabbing. It is also used to install the CryptoLocker ransomware. Zeus is spread mainly through drive-by downloads and phishing schemes. First identified in July 2007 when it was used to steal information from the United States Department of Transportation, it became more widespread in March 2009. In June 2009 security company Prevx discovered that Zeus had compromised over 74,000 FTP accounts on websites of such companies as the Bank of America, NASA, Monster.com, ABC, Oracle, Play.com, Cisco, Amazon, and BusinessWeek. Similarly to Koobface, Zeus has also been used to trick victims of technical support scams into giving the scam artists money through pop-up messages that claim the user has a virus, when in reality they might have no viruses at all. The scammers may use programs such as Command prompt or Event viewer to make the user believe that their computer is infected.
The Cutwail botnet, founded around 2007, is a botnet mostly involved in sending spam e-mails. The bot is typically installed on infected machines by a Trojan component called Pushdo. It affects computers running Microsoft Windows.
The Mariposa botnet, discovered December 2008, is a botnet mainly involved in cyberscamming and denial-of-service attacks. Before the botnet itself was dismantled on 23 December 2009, it consisted of up to 12 million unique IP addresses or up to 1 million individual zombie computers infected with the "Butterfly Bot", making it one of the largest known botnets.
The Metulji botnet, discovered in June 2011, is a botnet mainly involved in cyberscamming and denial of service attacks. Before the botnet itself was dismantled, it consisted of over 12 million individual zombie computers infected with the "Butterfly Bot", making it, as of June 2011, the largest known botnet.
Defence Intelligence, often referred to as Defintel, is an information security company based in Ottawa, Ontario, Canada. The company characterizes itself as offering services for "advanced compromise protection." Their marketing materials describe their services as being for the detection and prevention of compromised systems on a network, and include their Nemesis Compromise Protection (Nemesis) and Harbinger Compromise Assessment (Harbinger) services. Defence Intelligence was the security company that discovered the Mariposa botnet in 2008, which consisted of 8 to 12 million individual zombie computers at the time of its dismantling in 2009.
United States of America v. Ancheta is the name of a lawsuit against Jeanson James Ancheta of Downey, California by the U.S. Government and was handled by the United States District Court for the Central District of California. This is the first botnet related prosecution in U.S history.
ZeroAccess is a Trojan horse computer malware that affects Microsoft Windows operating systems. It is used to download other malware on an infected machine from a botnet while remaining hidden using rootkit techniques.
The Microsoft Digital Crimes Unit (DCU) is a Microsoft sponsored team of international legal and internet security experts employing the latest tools and technologies to stop or interfere with cyber crime and cyber threats. The Microsoft Digital Crimes Unit was assembled in 2008. In 2013, a Cybercrime center for the DCU was opened in Redmond, Washington. There are about 100 members of the DCU stationed just in Redmond, Washington at the original Cybercrime Center. Members of the DCU include lawyers, data scientists, investigators, forensic analysts, and engineers. The DCU has international offices located in major cities such as: Beijing, Berlin, Bogota, Delhi, Dublin, Hong Kong, Sydney, and Washington, D.C. The DCU's main focuses are child protection, copyright infringement and malware crimes. The DCU must work closely with law enforcement to ensure the perpetrators are punished to the full extent of the law. The DCU has taken down many major botnets such as the Citadel, Rustock, and Zeus. Around the world malware has cost users about $113 billion and the DCU's jobs is to shut them down in accordance with the law.
BASHLITE is malware which infects Linux systems in order to launch distributed denial-of-service attacks (DDoS). Originally it was also known under the name Bashdoor, but this term now refers to the exploit method used by the malware. It has been used to launch attacks of up to 400 Gbps.
Remaiten is malware which infects Linux on embedded systems by brute forcing using frequently used default username and passwords combinations from a list in order to infect a system.
References
- ↑ "New Zealand teenager accused of controlling botnet of 1.3 million computers". Heise online. November 30, 2007. Archived from the original on 2007-12-01.
- ↑ Shenagh Gleeson and Newstalk ZB (15 July 2008). "Conviction would harm hacker's future - judge". The New Zealand Herald . Retrieved 16 September 2011.
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