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How To Master CSS

How To Master CSS

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 Title   Date   Author   Host 

blog.commtouch.com

December 20, 2010

ASCII art uses cleverly arranged standard keyboard characters as well as extended character sets to create pictures or messages in a kind-of low-resolution graphic.

Spammers have used this technique in the past to evade content-based anti-spam filters - the jumble of characters that is used is simply not detected as spam. This newer version includes a clickable link (previous generations simply spelled out the name of the advertised website).

blog.commtouch.com

December 6, 2010

We detected a new email run of malware and released definition files for it. We call it W32/Trojan2.NLUQ. The email is a bit unusual in its presentation.

It grabs scripts and graphics from the Hallmark page which it will display in your email client. All of the clickable links in the email points to the Hallmark site. The catch is twofold. First it asks you to forward the email to 7 people and it has a malware attachment.

blog.commtouch.com

November 29, 2010

With the holiday season just around the corner we were not surprised to receive some greeting card emails. Viewing the "from address" of the email as shown below gives a hint that it's truly spam. The email is from "Halmark Greetings"?

"Halmark" with a single 'L'? The correct spelling is of course 'Hallmark' (the largest manufacturer of greeting cards in the United States). De-obfuscating the code shows the real intention of the attacker - downloading and executing malware through exploits. The malware exploits a range of vulnerabilities in RealPlayer, JAVA, Flash Player and Adobe Reader.

blog.commtouch.com

November 10, 2010

A unicode code inserted into a filename makes it look like a legitimate doc or xls - but it contains malware.

blog.commtouch.com

August 30, 2010

Commtouch labs have detected large volumes of emails with malicious HTML attachments. The emails purport to come from a range of legitimate sites including...

blog.commtouch.com

July 22, 2010

Well-crafted emails mimicking Amazon order confirmations have been detected in large quantities in the past week.  The Amazon logo and "your account" button actually take image files from the Amazon website.

blog.commtouch.com

July 21, 2010

In the last few weeks we have detected increasing usage of HTML attachments in a variety of message types - all of them attempting to install malware.

blog.commtouch.com

June 15, 2010

Commtouch labs have received scores of emails targeting twitter users. The emails have been neatly constructed to include the email address within the email - making them look more genuine.

Recipients are asked to open an attached html file to view their new password. The website that loads contains a browser exploit. Not very friendly...

blog.commtouch.com

May 27, 2010

This one almost had us convinced for about half a second with some fine phishing touches...

blog.commtouch.com

May 13, 2010

Yesterday we announced our collaboration with RSA, The Security Division of EMC, in which we now provide real-time phishing data to the RSA® FraudActionSM Anti-Phishing Service to further help prevent online fraud and identity theft. The phishing data

Aside from the traditional "dedicated" phishing sites, we also detect sites that have been hidden within legitimate sites. In our Q1 2010 trend report we provided statistics for these in the section entitled "Compromised websites - Categories infected with phishing." As described in the trend report, these legitimate sites infected with phishing are generally not changed in any obvious way. The phishing page is added by a hacker - unbeknownst to the site owner - and the link to the page is then inserted into phishing emails. The screenshots below show a recentexample identified by the Commtouch team of a legitimate site that is unknowingly hiding a Bank of America phishing page. Phishers gain several advantages from this ploy: * The legitimate site name lends legitimacy to the link * The phishing page is hosted for free * It usually takes several days or more to detect and remove the page

      

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