What is the Slammer virus?

SQL Slammer is a 2003 computer worm

computer worm

A computer worm is a standalone malware computer program that replicates itself in order to spread to other computers. It often uses a computer network to spread itself, relying on security failures on the target computer to access it. It will use this machine as a host to scan and infect other computers.

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Computer worm - Wikipedia

that caused a denial of service on some Internet hosts and dramatically slowed general Internet traffic. It spread rapidly, infecting most of its 75,000 victims within ten minutes.

Who created Slammer virus?

Origins of SQL Slammer

The potential for what would become the SQL Slammer worm was originally discovered by the security expert David Litchfield. In 2002, the '”bug hunter” ethically developed two methods to bypass the prevention mechanisms built into a version of Microsoft SQL Server.

How was the Slammer virus stopped?

The speed at which Slammer attacked was ultimately its downfall. By not throttling its infection routines, it crashed so many servers and networks that it ultimately slowed itself down. If it had been more judicious in its searching algorithms, then it's likely that it could have infected many more computers.

How does the Slammer virus spread?

SQL Slammer spreads by scanning the Internet for vulnerable systems, and it is this scanning activity that has degraded service across the entire Internet. A patch issued by Microsoft last summer removes the buffer overflow vulnerability in SQL 2000 servers.

How did the Slammer worm work?

The Slammer worm exploits the stack buffer overflow vulnerability in a pair of function offered by the SQL Server Resolution Service. By sending a specially formatted request to UDP port 1434, the Slammer worm overflow the buffers associated with either of the functions.

SQL Slammer 4

Why was Slammer worm faster?

Slammer's spread was considerably faster for several reasons, said the report. First, it was small. At just 376 bytes in size, the worm and required headers fit inside a 404-byte UDP (Universal Datagram Protocol) packet. Code Red was 4Kb in size while the Nimda worm was around 37Kb.

How did the Melissa virus work?

The Melissa virus, reportedly named by Smith for a stripper in Florida, started by taking over victims' Microsoft Word program. It then used a macro to hijack their Microsoft Outlook email system and send messages to the first 50 addresses in their mailing lists.

Who created Storm Worm?

4. The Storm Worm was traced back to Russian hackers, whose motives were profit. Researchers have concluded that a Russian hacker group in St. Petersburg were behind Storm.

What did Mydoom do?

Mydoom scraped addresses from infected machines, then sent copies of itself to those addresses. It also roped those infected machines into a web of computers called a botnet that performed distributed denial of service (DDoS) attacks. These attacks were intended to shut down a target website or server.

Who created the Code Red worm?

The Code Red worm was first discovered and researched by eEye Digital Security employees Marc Maiffret and Ryan Permeh, the Code Red worm exploited a vulnerability discovered by Riley Hassell. They named it "Code Red" because Code Red Mountain Dew was what they were drinking at the time.

What is a Trojan worm?

Worm. Trojan Horse. Virus is a software or computer program that connect itself to another software or computer program to harm computer system. Worms replicate itself to cause slow down the computer system.

What is the ultimate goal of Storm Worm?

The Storm worm is a Trojan horse that opens a backdoor in the computer which then allows it to be remotely controlled, while also installing a rootkit that hides the malicious program.

What did Nimda virus do?

If Internet users stop at a Web site that's been infected, their personal files can be infiltrated by the virus. Nimda, which is "Admin" spelled backward, targets Windows-based servers and computers. It has caused Web sites across the world to shut down.

What does the Sasser virus do?

The Sasser worm attacks recent versions of Microsoft Windows, such as Windows 2000, Windows Server 2003 and Windows XP, and causes computers to slow down, crash and reboot frequently. Sasser does not cause any permanent damage to files or machines, experts say.

What is Creeper in computer?

One of its researchers, Bob Thomas, had created Creeper as an experimental computer program. Creeper was a worm — a type of computer virus that replicates itself and spreads to other systems. In this case, its targets were Digital Equipment Corporation (DEC) computers which were linked to ARPANET.

Is MyDoom real?

The Mydoom computer worm is a piece of malicious malware which was first discovered in 2004. It targets Windows-based machines, replicates itself via email attachments, and remains the fastest-spreading virus in history.

Who created MyDoom?

The actual author of the worm is unknown. The worm appeared to be a poorly sent e-mail, and most people who originally were e-mailed the worm ignored it, thinking it was spam. However, it eventually spread to infect over 50 million computers across the globe.

Who stopped MyDoom?

Ding dong the wicked worm is dead. MyDoom-A is programmed to stop spreading today, marking the end of arguably the worst email-borne viral epidemic to date. MessageLabs, the email filtering firm, blocked the virus 43,979,281 times in the two weeks since its first appearance in late January.

How can Storm Worm be removed?

Manual removal is not necessary, especially since there are many removal tools already available that can remove the Storm Worm. These tools include Microsoft Safety Scanner and Sophos Virus Removal Tool. Most security products with real-time protection are able to detect and automatically get rid of the worm.

Who created Trojan horse malware?

Called ANIMAL, the first Trojan (although there is some debate as to whether this was a Trojan, or simply another virus) was developed by computer programmer John Walker in 1975, according to Fourmilab.

What are rootkits used for?

The whole purpose of a rootkit is to protect malware. Think of it like an invisibility cloak for a malicious program. This malware is then used by cybercriminals to launch an attack. The malware protected by rootkit can even survive multiple reboots and just blends in with regular computer processes.

Does Melissa virus still exist?

The impacts of the Melissa virus

According to the FBI website, the virus overloaded email servers at more than 300 corporations and government agencies, shutting down some entirely. The virus itself reached thousands of computers by sending itself through the mailing lists of infected devices.

How could the Melissa virus have been prevented?

You cannot avoid receiving and reading e-mails – be wary and do not open attachments if you find them suspicious. Especially if you get an email with “Important Message from [the name of someone],” and do not attempt to open an attachment especially if you find a doc with the name LIST.

Is Disk Killer a boot virus?

Disk Killer is the first boot sector virus that is properly able to handle other sector sizes than 512 bytes.

What is the fastest spreading computer virus in history?

Sapphire/Slammer smashed the speed record for Internet bugs

The Sapphire worm that struck the Internet 2 weeks ago was the fastest spreading computer infection in history, according to a new technical report, whose authors call this latest infection a milestone in worm evolution.