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Monthly Archives: June 2008

Dirt Championship

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Clean Air

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Learn Something New

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Top 10 worst computer viruses

Top 10 worst computer viruses

Malicious software, worms, Trojans and computer viruses are on the increase, say security experts, as hackers, spammers and identity thieves seek new ways to steal information that can be used to empty bank accounts or spread electronic mayhem. Here, we present a look back at the 10 worst computer viruses of ever made:

1. The Morris worm

In 1998 Robert Morris, a university student, unleashed a worm which affected 10 per cent of all the computers connected to the internet (at the time the net was estimated to consist of 60,000 computers), slowing them down to a halt. Morris is now an associate professor at MIT.

2. The Concept virus

The Concept virus, accidentally shipped on a CD-ROM supplied by Microsoft in 1995, was the first virus to infect Microsoft Word documents. Within days it became the most widespread virus the world had ever seen, taking advantage of the fact that computer users shared documents via email.

3. CIH

The Chernobyl virus (also known as CIH) triggers on April 26 each year, the anniversary of the Chernobyl nuclear disaster. It overwrites a chip inside PCs effectively paralysing the entire computer. Its author, Chen Ing Hau, was caught by the authorities in Taiwan.

4. The Anna Kournikova worm

The Anna Kournikova worm posed as a picture of the tennis player, but was in fact a virus written by Jan de Wit, an obsessed admirer from the Netherlands. He ended up receiving a community service sentence.

5. ILOVEYOU

The Love Bug flooded internet users with ILOVEYOU messages in May 2000, forwarding itself to everybody in the user’s address book. It was designed to steal internet access passwords for its Filipino creator.

6. The Melissa virus

The Melissa virus, written by David L Smith in homage to a Florida stripper, was the first successful email-aware virus and inserted a quote from The Simpsons in to Word documents. Smith was later sentenced to jail for causing over $80 million worth of damage.

7. The Blaster Worm

The Blaster worm launched a denial of service attack against Microsoft’s website in 2003, and infected millions of computers around the world by exploiting a security hole in Microsoft’s software. Its author has never been found.

8. Netsky and Sasser

Sven Jaschan, a German teenager, was found guilty of writing the Netsky and Sasser worms. Jaschan was found to be responsible for 70 per cent of all the malware seen spreading over the internet at the time, but escaped prison and was eventually hired by a security company as an “ethical hacker”.

9. OSX/RSPlug Trojan

In November 2007, the first example of financially-motivated malware for Apple Macs was discovered in the wild. The launch of the OSX/RSPlug Trojan increased fears that Apple’s platform may be targeted more by hackers in the future.

10. Storm worm

The Storm worm, originally posing as breaking news of bad weather hitting Europe, infected computers around the world in 2007. Millions of infected PCs were taken over by hackers and used to spread spam and steal identities.

 

Antivirus Provider in India

Antivirus Support Number +91 9582907788

Antivirus Provider in India

Antivirus Provider in India

Antivirus Provider in India

Antivirus or anti-virus software (often abbreviated as AV), sometimes known as anti-malware software, is computer software used to prevent, detect and remove malicious software. Antivirus software was originally developed to detect and remove computer viruses. Antivirus Firm can protect from malicious Browser Helper Objects (BHOs), browser hijackers, ransomware, keyloggers, backdoors, rootkits, trojan horses, worms, malicious LSPs, dialers, fraudtools, adware and spyware. Some products also include protection from other computer threats, such as infected and malicious URLs, spam, scam and phishing attacks, online identity (privacy), online banking attacks, social engineering techniques, Advanced Persistent Threat (APT), botnets DDoS attacks.

There are several methods which antivirus engine can use to identify malware:

Antivirus Firm an Anti virus Software Provider Company in Delhi - India

Antivirus Firm an Anti virus Software Provider Company in Delhi – India

  • Signature-based detection: is the most common method. To identify viruses and other malware, the antivirus engine compares the contents of a file to its database of known malware signatures.
  • Heuristic-based detection: is generally used together with signature-based detection. It detects malware based on characteristics typically used in known malware code.
  • Behavioural-based detection: is similar to heuristic-based detection and used also in Intrusion Detection System. The main difference is that, instead of characteristics hardcoded in the malware code itself, it is based on the behavioural fingerprint of the malware at run-time. Clearly, this technique is able to detect (known or unknown) malware only after they have starting doing their malicious actions.
  • Sandbox detection: is a particular behavioural-based detection technique that, instead of detecting the behavioural fingerprint at run time, it executes the programs in a virtual environment, logging what actions the program performs. Depending on the actions logged, the antivirus engine can determine if the program is malicious or not. If not, then, the program is executed in the real environment. Albeit this technique has shown to be quite effective, given its heaviness and slowness, it is rarely used in end-user antivirus solutions.
  • Data mining techniques: are one of the latest approach applied in malware detection. Data mining and machine learning algorithms are used to try to classify the behaviour of a file (as either malicious or benign) given a series of file features, that are extracted from the file itself.

     Antivirus Firm also provide server security (Endpoint security)

Antivirus Firm an Anti virus Software Provider Company in Delhi - India

Antivirus Firm an Anti virus Software Provider Company in Delhi – India

Simple forms of endpoint security include personal firewalls or anti-virus software that is distributed and then monitored and updated from the server. The term is evolving, however, to include intrusion detection with behavior-blocking components that monitor devices and look for actions that are typically initiated by rootkits. The term endpoint security is also being used in association with anti-virus in the cloud. In this software-as-a-service delivery model, the host server and its security programs are maintained remotely by the vendor.

  Antivirus Firm also Provide mobile Security

Antivirus Firm an Anti virus Software Provider Company in Delhi - India

Antivirus Firm an Anti virus Software Provider Company in Delhi – India

Mobile phone security has become increasingly important in mobile computing. It is of particular concern as it relates to the security of personal and business information now stored on smartphones.All smartphones, as computers, are preferred targets of attacks. These attacks exploit weaknesses related to smartphones that can come from means of communication like Short Message Service (SMS, aka text messaging),Multimedia Messaging Service (MMS), Wi-Fi networks, Bluetooth and GSM, the de facto global standard for mobile communications. There are also attacks that exploit software vulnerabilities from both the web browser and operating system. Antivirus Firm software provide security against mobile threats etc.

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Antivirus Software Providers in India

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Water Town

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Maritime Shipping

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Cooking Courses

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Long Exposures

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Living Art

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