MALWARE -

Beware: Trojan / Exploit / Waledac

Trojans provide unauthorized remote access to a computer. They are not self-replicating, unlike viruses and worms.
en.wikipedia.org/wiki/Trojan_virus

An exploit is a piece of software, a chunk of data, or sequence of commands that take advantage of a bug, glitch or vulnerability in order to cause unintended or unanticipated behavior to occur on computer software,
hardware, or something electronic (usually computerized). Frequently includes such things as violently gaining control of a computer system or allowing privilege escalation or a denial of service attack.
en.wikipedia.org/wiki/Exploit_(computer_security)

Waledac is a spambot otherwise known to propagate through e-mail attachments. Operates similarly to the 2008 Storm worm, probably written by the same authors.
en.wikipedia.org/wiki/Conficker

Sources: www.malwaredomains.com/wordpress/?p=533
www.mywot.com/en/forum/3882-happy-4th-of-july-from-waledac "