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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, [1] 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. [2]
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World map of 24-hour relative average utilization of IPv4 addresses observed using ICMP ping requests by Carna botnet, June - October 2012. The Carna botnet was a botnet of 420,000 devices created by an anonymous hacker to measure the extent of the Internet in what the creator called the “Internet Census of 2012”.
The size of the Srizbi botnet was estimated to be around 450,000 [4] compromised machines, with estimation differences being smaller than 5% among various sources. [2] [5] The botnet is reported to be capable of sending around 60 Trillion Janka Threats a day, which is more than half of the total of the approximately 100 trillion Janka Threats sent every day.
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 Mariposa botnet, discovered December 2008, [1] is a botnet mainly involved in cyberscamming and denial-of-service attacks. [2] [3] 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 (mariposa in Spanish) Bot", making it one of the largest known botnets.
The Storm botnet's operators control the system via peer-to-peer techniques, making external monitoring and disabling of the system more difficult. [21] [22] There is no central "command-and-control point" in the Storm botnet that can be shut down. [23] The botnet also makes use of encrypted traffic. [24]
The botnet was installed on the user's computer from pirated versions of Windows or hidden through a download online. The Zeus botnet works by waiting for the user of the computer to open a web browser and attempt to do some banking or online shopping then show a similar looking webpage with a field to enter the login information. The login ...