Telstra has revealed the addition of almost one million new mobile services in the six months to December 2011, but Sensis revenues plummeted 24 percent in 12 months.
The security firm also said that, while image spam does
not currently dominate the spam landscape, as it did in 2007 — when 52
percent of all spam was image spam —image spam hit an average of
sixteen percent of all spam messages towards the end of April.
According to Symantec, image spam does from time
to time reappear on the spam landscape, and in recent weeks a
resurgence of image spam has been observed.
“Image spam is by definition a spam message which contains an attached
image with little or no text, or HTML in the message body. The attached
image will often contain various obfuscation techniques such as subtle
changes to the colour or font and added background noise contained in
the image in an effort to evade anti-spam detection.”
The call to action for the recipient, says Symantec, is often described
in the attached image itself, with the recipient asked to type a
certain URL into the address bar of their browser.
“If the recipient took this action and followed this URL they would be
taken to a web-site promoting certain pharmaceutical products,”
Symantec warns.
David Bass
| ComOps, a leading Australian provider of business software products and services, has won a competitive tender to deploy its Salvus safety, r…
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