Security Response Blogs

New Variants of W32.Downadup.B Find New Ways to Propagate

Symantec has observed an increase in infections relating to W32.Downadup over the holiday period and is urging organizations to apply the patch for [More ...]

New Year Brings New Spam Attacks

A Spammer Has Sent You a Message

Symantec has observed at least two major social networking sites being spoofed in spam attacks this week. The spam is likely hitching a ride on the back of a recent phishing scam, as [More ...]

Not-For-Profit Phishing

A recent phishing scheme that targets users of Twitter (http://blog.twitter.com/2009/01/gone-phishing.html) may be r...[More ...]

W32.Downadup Infection Statistics

2008—Ending With a Bang

This has been an interesting year for high-profile vulnerabilities and security research. In 2008, awareness has been raised about a number of high impact, remote code-execution vulnerabilities aff...[More ...]

Merry Christmas from Arnold Schwarzenegger! (?)

While investigating the worm W32.Waledac recently, we got a shock (and a few laughs) from what popped up on ours screens (yes, unfortunately this is what passes for kicks in the virus lab during th...[More ...]

Phishing Attacks Utilizing Port Numbers

There are varying types of technologies used by online attackers these days. There are old tricks and of course new ones, but it is the newer ones that make it even more difficult to handle the dil...[More ...]

An Early Holiday Gift—The Return of Spam

After the shutdown of McColo, which was aiding the distribution of about half of all spam on the internet globally, spam volumes dropped. However, since mid-November, spam volumes have been slowly ...[More ...]

Missing Email Headers? Find Them in the Body.

Spammers always try to come up with new tricks to bypass antispam filters. This time, they have shown an ability to partly (or sometimes completely) hide essential headers, ruling filters on header...[More ...]