Internet’s bad neighborhoods aren’t big – just home to the worst creeps!

sucker

About 50% of all junk mail on the net emerges from just 20 internet service providers (ISPs)…

The survey of more than 42,000 ISPs tried to map the net’s “bad neighbourhoods” to help pinpoint sources of malicious mail…The survey by a researcher in Holland found that, in many cases, ISPs specialise in particular threats such as spam and phishing…

The large-scale study was carried out to help fine-tune computer security tools that scrutinise the net addresses of email and other messages to help them work out if they are junk or legitimate. Such tools could make better choices if they were armed with historical information about the types of traffic that emerge from particular networks…

Of the 42,201 ISPs studied about 50% of all junk mail, phishing attacks and other malicious messages came from just 20 networks, Giovane Cesar Moreira Moura found. Many of these networks were concentrated in India, Vietnam and Brazil. On the net’s most crime-ridden network – Spectranet in Nigeria – 62% of all the addresses controlled by that ISP were seen to be sending out spam.

Networks involved in malicious activity also tended to specialise in one particular sort of malicious message or attack, he discovered. For instance, the majority of phishing attacks came from ISPs based in the US. By contrast, spammers tend to favour Asian ISPs. Indian ISP BSNL topped the list of spam sources in the study…

The data gathered for the study is helping to create analysis tools that will do a better job of assessing whether traffic coming from sources never seen before is good or bad. In the same way that people avoid walking through parts of towns and cities known to be dangerous, security tools can start to filter traffic from ISPs known as historical sources of malicious messages.

Even if you’re gambling with friends, you cut the cards. If you’re playing with strangers, it helps to have ground rules founded in history. ISPs which consistently dispense criminal attacks lose the excuse of ignorance after a while.

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