Fake URL Shortening Services –Spammers Latest Weapon

According to Symantec’s May 2011 MessageLabs Intelligence Report, released several days ago, spammers are now employing their own fake URL shortening services to redirect users to the spammer’s Web site. It’s hardly surprising that this new technique has directly contributed to rising spam rates.

MessageLabs Intelligence reports that “shortened links created on these fake URL-shortening sites are not included directly in spam messages. Instead, the spam emails contain shortened URLs created on legitimate URL-shortening sites. These shortened URLs lead to a shortened-URL on the spammer’s fake URL-shortening Web site, which in turn redirects to the spammer’s own Web site.”

Key findings from the May 2011 report include:

Spam: In May 2011, the global ratio of spam in email traffic from new and previously unknown bad sources increased by 2.9 percentage points since April 2011 to 75.8% (1 in 1.32 emails).

In the US 76.4 percent of email was spam, 75.3 percent in Canada, 75.4 percent in the UK, and 73.9 percent in Australia.

Viruses: The global ratio of email-borne viruses in email traffic from new and previously unknown bad sources was one in 222.3 emails (0.450 percent) in May, a decrease of 0.143 percentage points since April.

Endpoint Threats: The most frequently blocked malware targeting endpoint devices for the last month was the W32.Ramnit!html, a worm that spreads through removable drives and by infecting executable files.

Phishing: In May, phishing activity was 1 in 286.7 emails (0.349 percent), a decrease of 0.06 percentage points since April.

Web security: Analysis of Web security activity shows that approximately 3,142 Web sites each day were harboring malware and other potentially unwanted programs including spyware and adware, an increase of 30.4 percent since April 2011. 36.8 percent of malicious domains blocked were new in May, an increase of 3.8 percentage points since April. Additionally, 24.6 percent of all web-based malware blocked was new in May, an increase of 2.1 percentage points since last month.

The May 2011 MessageLabs Intelligence Report provides greater detail on all of the trends and figures noted above, as well as more detailed geographical and vertical trends. The full report is available here.

Reading this type of report (or at least the highlights), can be a major step in expanding the sense of threat awareness that active Internet users’ require.

Symantec’s MessageLabs Intelligence is a respected source of data and analysis for messaging security issues, trends and statistics. MessageLabs Intelligence provides a range of information on global security threats based on live data feeds from control towers around the world scanning billions of messages each week.

About Symantec:

Symantec is a global leader in providing security, storage and systems management solutions to help consumers and organizations secure and manage their information-driven world. Our software and services protect against more risks at more points, more completely and efficiently, enabling confidence wherever information is used or stored. More information is available at www.symantec.com.

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March 2011 MessageLabs Intelligence Report – Rustock Goes Down, Bagle Botnet Picks Up The Slack

There’s been much more discussion recently as to whether infected computers should be allowed unrestricted access to the Internet. Despite the fact we’ve been around the horn on this question for years, there’s still little consensus on this thorny issue.

Since infected computers, linked together in botnets, form the backbone of spam distribution networks – according to the March 2011 MessageLabs Intelligence Report, botnets sent an average of 88.2% of global spam during 2010 – this question needs to be taken off the back burner and dealt with much more aggressively.

Frankly, I’m tired of making excuses for people who are too damn lazy, too damn stupid, too damn inconsiderate, ………. to take the time to learn the basics of computer security. And, as a consequence cause me, and you incidentally, to have to deal with volumes of spam that are beyond the pale.

Graphic courtesy of Symantec (Click to expand to original)

According to the March 2011, MessageLabs Intelligence Report (released yesterday), the recently taken down Rustock botnet “had been sending as many as 13.82 billion spam emails daily, accounting for an average of 28.5% of global spam sent from all botnets in March.”

A little math suggests, that during March enough Spam was emailed that conceivably, every person on the Planet received 7 spam emails EVERY DAY! Since every person on the Planet is not connected, the abuse takes on another magnitude. I can’t think of another finite resource – and the Internet is a finite resource – that could be continuously abused in this way, without some kind of strong kickback.

Are we making any headway against botnets and the cyber criminals behind them? Not according to the MessageLabs Intelligence Report we’re not. Sure, Rustock has bitten the dust (at least for the moment), but the Bagle botnet has stepped into the breech, bumped up its output, and is now sending 8.31 billion spam emails each day, mostly tied to pharmaceutical products.

Report highlights:

Spam: In March 2011, the global ratio of spam in email traffic from new and previously unknown bad sources decreased by 2 percent (1 in 1.26 emails).

Viruses: The global ratio of email-borne viruses in email traffic from new and previously unknown bad sources was one in 208.9 emails (0.479 percent) in March, an increase of .134 percentage points since February. In March, 63.4 percent of email-borne malware contained links to malicious websites, a decrease of .1 percentage points since February.

Endpoint Threats: The endpoint is often the last line of defense and analysis. The threats found here can shed light on the wider nature of threats confronting businesses, especially from blended attacks. Attacks reaching the endpoint are likely to have already circumvented other layers of protection that may already be deployed, such as gateway filtering.

Phishing: In March, phishing activity was 1 in 252.5 emails (0.396 percent), a decrease of 0.065 percentage points since February.

Web security: Analysis of web security activity shows that an average of 2,973 websites each day were harbouring malware and other potentially unwanted programs including spyware and adware, a decrease of 27.5% since February. 37 percent of malicious domains blocked were new in March, a decrease of 1.9 percentage points since February. Additionally, 24.5 percent of all web-based malware blocked was new in March, a decrease of 4.2 percentage points since last month.

Reading this type of report (or at least the highlights), is certainly educational, and can be a major step in expanding that sense of threat awareness that active Internet users’ require.

The full MLI Report is available here in PDF.

Symantec’s MessageLabs Intelligence is a respected source of data and analysis for messaging security issues, trends and statistics. MessageLabs Intelligence provides a range of information on global security threats based on live data feeds from control towers around the world scanning billions of messages each week.

About Symantec:

Symantec is a global leader in providing security, storage and systems management solutions to help consumers and organizations secure and manage their information-driven world. Our software and services protect against more risks at more points, more completely and efficiently, enabling confidence wherever information is used or stored. More information is available at www.symantec.com.

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Spam Falls To ONLY 33.5 BILLION Spam Emails Daily – January 2011 MessageLabs Intelligence Report

If you haven’t gotten an email lately for a “performance” enhancer like Cialis, or Viagra here’s why –

According to Symantec’s MessageLabs Intelligence Report for January, 2011, pharmaceutical spam recently dropped to 59.1% of all spam – down from it’s all time high of 85% of all spam, back in May 2010. Still, that’s small comfort when you consider that spam currently accounts for 75.7 percent of all email traffic. What a waste of the Internet’s finite resources.

The report points out that “the decline is the result of both a halt in the spam-sending activities of three botnets – Rustock, Lethic and Xarvester – and also unrest among pharmaceutical spam-sending gangs following the closure of pharmaceutical spam affiliate, Spamit”.

This respite however, is likely to be short lived. MessageLabs Intelligence Senior Analyst, Paul Wood pointed out ‘”there are likely other factors at work, such as consolidation and restructuring of pharmaceutical spam operations ……….  we expect to see more pharmaceutical spam in 2011 as new pharmaceutical spam brands emerge and botnets compete for their business.”

A snapshot of the threat landscape over the last month:

Spam: In January 2011, the global ratio of spam in email traffic from new and previously unknown bad sources was 78.6 percent (1 in 1.3 emails), a decrease of 3.1 percentage points since December.

Viruses: The global ratio of email-borne viruses in email traffic from new and previously unknown bad sources was one in 364.8 emails (0.274 percent) in January, a decrease of .03 percentage points since December. In January, 65.1 percent of email-borne malware contained links to malicious websites, a decrease of 2.5 percentage points since December.

Endpoint Threats: Threats against endpoint devices such as laptops, PCs and servers may penetrate an organization in a number of ways, including drive-by attacks from compromised websites, Trojan horses and worms that spread by copying themselves to removable drives. Analysis of the most frequently blocked malware for the last month revealed that the Sality.AE virus was the most prevalent. Sality.AE spreads by infecting executable files and attempts to download potentially malicious files from the Internet.

Phishing: In January, phishing activity was 1 in 409.7 emails (0.244 percent), an increase of 0.004 percentage points since December.

Web security: Analysis of web security activity shows that 44.1 percent of malicious domains blocked were new in January, an increase of 7.9 percentage points since December. Additionally, 21.8 percent of all web-based malware blocked was new in January, a decrease of 3.1 percentage points since last month. MessageLabs Intelligence also identified an average of 2,751 new websites per day harboring malware and other potentially unwanted programs such as spyware and adware, a decrease of 21.5 percent since December.

Reading this type of report (or at least the highlights), is certainly educational, and can be a major step in expanding that sense of threat awareness that active Internet users’ require.

The full MLI Report is available here in PDF.

Symantec’s MessageLabs Intelligence is a respected source of data and analysis for messaging security issues, trends and statistics. MessageLabs Intelligence provides a range of information on global security threats based on live data feeds from control towers around the world scanning billions of messages each week.

About Symantec:

Symantec is a global leader in providing security, storage and systems management solutions to help consumers and organizations secure and manage their information-driven world. Our software and services protect against more risks at more points, more completely and efficiently, enabling confidence wherever information is used or stored. More information is available at www.symantec.com.

If you found this article useful, why not subscribe to this Blog via RSS, or email? It’s easy; just click on this link and you’ll never miss another Tech Thoughts article.

150 BILLION Daily Spams – Who’s Responsible?

Symantec’s latest MessageLabs Intelligence Report – unveiled today – describes in detail who’s responsible for such unprecedented levels of spam.

Over 150 BILLION unsolicited e-mail messages are being distributed by compromised computers every day, which means that botnets are responsible for approximately 88 percent of all spam out there today.

Recent closures of rogue Internet Service Providers McColo, PriceWert and Real Host have significantly hurt the two biggest botnets of 2009: Cutwail and Srizbi, which at their peak where each responsible for 45.6 percent and 50 percent of all global spam, respectively. Since then, Cutwail has been bumped to the third most powerful botnet and Srizbi has disappeared.

Here’s a look at how some of the newest botnets stack up:

Grum – the most active botnet, responsible for over 23 percent of global spam. Since June, Grum has increased its output per bot massively, pushing it to the top of the current “worst offenders”.

Bobax – has overtaken Cutwail as a top botnet, and is responsible for 15.7 percent of spam. Previously one of the smaller, less active botnets, Bobax has now quadrupled in size and its output per bot per minute is now the highest MessageLabs has ever seen.

Rustock – the largest botnet of all, with an estimated 1.3 to 1.9 million compromised computers in its control. Rustock has roughly doubled in size since June, but doesn’t have a high output. What sets this botnet apart from the rest is its highly automated cycle of spamming activity: spam from this botnet accelerates from 3am EST, peaks around 7am EST and dies down by 7pm EST.

Mega D – has been losing bots quite rapidly. It is now only one tenth the size it was in June. However, it’s now working its bots harder than ever, 2nd only to the output of Bobax in spam per bot per minute!

Maazben – meet the newest botnet, and one to watch in the future. Currently focused on sending out casino-spam, Maazben first appeared in May and has been growing the number of bots rapidly in recent weeks while keeping its output low.

What else can we expect from these powerful machines and how can businesses safeguard against their threats? You can find additional information on this and other online threats here.

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